Sanders are good for more than just smoothing lumber. Removing layers of paint, rough processing of metal, fine finishing of surfaces before finishing work - this is an incomplete list of processes available to the lucky person with a grinder.
In this article we offer you:
- consider the rating of grinding machines;
- determine the range of proposed work;
- choose the appropriate equipment.
| Criterias of choice | Feature Options | Distinctive properties and features of the equipment |
|---|---|---|
| Power type | From the mains | Wide power range. Electronic control systems are used to the maximum. You can choose a tool for working with wood, metal, plastic. |
| From battery | Light weight, mobility. Suitable for small one-time jobs at room temperature. | |
| Pneumatic | Simplicity of design. Long-term operation without overheating and excessive wear of critical components. To operate efficiently, you need a powerful compressor. | |
| Method of movement of the working unit with consumables | Straight-line continuous feed of abrasive | Band tools – for rough or fine processing of large volumes (lumber, sheet metal and products made from them). Brush – for textured surfaces (processing of embossed steel sheets, artificial aging wood). |
| Vibration without rotation | Reciprocating movements with a small stroke amplitude provide high-quality results for fine floor grinding and polishing processes wooden decor and treatment of walls and ceilings before painting. | |
| Orbital (rotating) eccentric with vibration | High productivity in cleaning, grinding, polishing (cars, furniture, interior decoration, processing of metal structures). | |
| Type of moving part of the tool | Straight shaft | Precise work with small details of carved elements made of wood and plastic. Only straight CMM models. |
| Circle | Rough cleaning and fine polishing of any surfaces. | |
| Corner options (“delta”, “iron”, with an additional corner) | Efficient processing of shaped products ( door leaf, decoration of an arched opening, joints of metal structures). | |
| Rectangle | Belt and surface grinding tools. For pshm, this base shape combines the capabilities of round and triangular soles. | |
| Method of consumable fixation | "Velcro" (Velcro) | Large hooks are optimal for working with wood. Small - for circles for processing painted metal, putty surfaces. |
| Mechanical clamps | Preparing walls, plywood, furniture panels for painting. | |
| Collet | Direct CMM. For precision machining of small wood, metal and plastic parts; high-quality cleaning hard-to-reach areas. | |
| Drive and driven shafts | Tape models. Processing of construction lumber (timbers, boards). Preparation of wood products (countertops, stair steps, furniture panels, floor coverings) and metal for painting. | |
| Vibration amplitude (orbit), mm | Up to 5 | Fine grinding, polishing wood, metal, plastic, glass. The lower the declared value, the more accurately the top layer is removed. |
| Over 5 | Rough surface treatment of timber and lumber, removal of paintwork and traces of corrosion from metal surfaces. | |
| Variable | The design of the gearbox allows you to work with the desired amplitude (no more than 2 options) required for a specific task (material). | |
| Weight, kg | Up to 2 | Ease of use on walls and ceilings. |
| Over 2 | Effective: polishing, grinding and cleaning surfaces (car body, buildings and wood products, metal structures) located below the level of the master’s shoulders. |
Before you begin to familiarize yourself with the capabilities of the most popular models, you should remember two facts:
- Each variety has a fairly narrow range of applications. Multifunctionality is characteristic only of renovators, but the volume of work that MFPs can handle does not allow them to be considered as the main tool, even for an enthusiastic amateur;
- the opinion that an angle grinder (angle grinder) in skillful hands can cope with any task (from removing paintwork to sharpening drills and saw chains) is not supported by reliable facts. In 99 cases out of 100, such “versatility” is associated with a violation of safety regulations.
| Model | Name / dimensions of the consumable, (L-length, B-width, h-depth, D-diameter), mm | Amplitude/frequency of oscillations, mm/number. in a minute | Work rate, per minute | Power, W | Weight, kg | Average price, rub. | |
|---|---|---|---|---|---|---|---|
| Belt grinding machines (rough grinding of lumber after or instead of sharpening; removal of relief, cleaning of sheet metal) | |||||||
| Tape / L-456, B-76 | — | 260 m | 800 | 3.1 | 3326 | ||
| Tape / L-457, B-76 | — | 270 m | 650 | 2.7 | 7699 | ||
| Tape / L-533, B-75 | — | 450 m | 1010 | 4.9 | 16299 | ||
| Surface grinding equipment (cleaning and grinding of parts and products made of metal, wood and plastic) | |||||||
| Delta sanding paper / L-140, B-85 | 1.4 / 11000 | — | 125 | 0.9 | 1618 | ||
| Rectangle sanding paper / L-230, B-115 | 2.4 / 10500 | — | 300 | 2.3 | 2490 | ||
| Rectangle sanding paper / L-228, B-93 | 2 / 22000 | — | 190 | 1.6 | 3970 | ||
| Random orbital sanders (preparation for painting, intermediate sanding and polishing of plastic, metal and wood surfaces) | |||||||
| Emery wheel D-150 | 3.2-6.4 / 8000-20000 | 4000-10000 rpm | 440 | 2.8 | 8683 | ||
| Emery wheel D-150 | 5 / 5000-10000 | 10000 rpm | 450 | 2.1 | 14350 | ||
| Emery wheel D-150 | 5.5 / 180-670 | 1600-5800 rpm | 750 | 2.8 | 20986 | ||
| Corner grinding machines (rough cleaning of metal surfaces, ends and welding seams; cutting of rolled metal; cleaning of hard-to-reach areas of wooden structures) | |||||||
| Emery wheel D-125 | — | 1100 rev. | 950 | 2.6 | 2020 | ||
| Emery wheel D-230 | — | 6500 rpm | 2100 | 6.6 | 5140 | ||
| Emery wheel D-150 | — | 9000 rpm | 1450 | 2.5 | 8250 | ||
| Brush sanders (cleaning and grinding of embossed metal, artificial aging of wood) | |||||||
| Brush D-120 | — | 3000 rpm | 1400 | 3.35 | 8209 | ||
| Brush D-100 | — | 3500 rpm | 860 | 4.2 | 25310 | ||
| Brush D-115 | — | 750-3000 rpm | 1400 | 3.4 | 35265 | ||
Belt grinding mills (rough grinding of lumber after or instead of sharpening; removal of relief, cleaning of sheet metal).
at prices starting from RUB 3,326.
Budget belt model with an adjustable additional handle, designed for rough cleaning and longitudinal grinding of coatings on large areas. Adjusting the rotation speed of the abrasive belt allows you to select the optimal mode for working with wood, plastic and metal. The design of the tool (an opening cover above the driven shaft) provides the ability to process cavities whose depth does not exceed 80 mm. The driven shaft protruding beyond the housing makes it possible to process surfaces limited by straight and turned corners. Despite the presence of a locking start key and a powerful motor, the tool is not intended for intensive use.
- A 10-minute break after half an hour of continuous work,
- periodic blowing of air ducts,
- timely maintenance,
are the guarantor of many years of trouble-free operation of the Bort BBS-801N model in conditions of non-professional use.
Watch a short video about the Bort BBS-801N model, revealing the features of control and configuration of the instrument:
at prices starting from RUB 7,699.
Light weight and low power do not interfere with cleaning the coating, sanding irregularities, or polishing paintwork. Obtaining a high-quality result on any surface is made possible thanks to the smooth adjustment of the belt rotation speed. Convenience of working with long construction moldings is provided by:
- location of controls,
- ergonomic handle at the front of the sander,
- autonomous dust collector,
- simple mechanism for tensioning the tape.
The simplicity of the equipment does not affect the results of the CMM operation. Provided that the tool is correctly adjusted (speed, shaft alignment) before starting work, productivity and quality will be at a professional level.
Watch a video about custom mounting and use of the Makita 9911 model:
at prices starting from RUB 16,299.
One of the advantages of the model is the patented engine control system. With its help, stable rotation of the belt is ensured. Regardless of how hard you press the tool against the surface being processed. Given the weight and power of the sander, intensive lumber processing tasks will not be difficult even for a novice carpenter.
Embodied in the BAE 75 design:
- smooth start,
- fixing the trigger,
- adjustable front handle,
- conveniently located controls,
- own vacuum cleaner and the ability to connect an external vacuum cleaner,
- a long tape that can be quickly replaced without auxiliary tools,
determine the reliability and ease of maintenance of well-balanced equipment. Which explains the popularity is far from budget option Shm from professional builders.
Watch a video review on the capabilities and equipment of the Metabo BAE 75:
Surface grinding equipment (cleaning and grinding of parts and products made of metal, wood and plastic).
at prices starting from RUB 1,618.
Compact tool PShM-32/130 with a delta-shaped sole for fine grinding at corner joints and on a relief surface (a paneled door made of solid wood, for example). Access to any corner is ensured by the tapered sole. The combination of minimal amplitude and low vibration frequency of the platform guarantees professional quality:
- when removing single-layer coatings (coarse-grain consumables are needed);
- when sanding smooth changes (fine sandpaper will be required);
- when dry polishing protective layers of paints and varnishes (with a suitable soft nozzle).
The connection of the consumable to the sole is made using the Velcro system (also known as Velcro), which securely holds the abrasive sheet during operation. If you do not have the necessary consumables, they can be cut from sandpaper with felt layer. For full operation of the built-in dust removal system, it is necessary to make holes in the self-cut sheets according to the sole template. The main thing is not to subject this amateur tool to constant intense loads, and to blow all holes with compressed air after finishing work.
| Characteristics | Values |
|---|---|
| "delta" / sandpaper L-140, B-85 | |
| Abrasive fastening | Velcro |
| 1.4 / 11000 | |
| Power, W | 130 |
| Model options |
|
| Additional equipment | Sanding paper kit |
| Weight, kg | 0.9 |
| Development/production | Russia / China |
| Cost, rub. | 1618 |
Watch a short video review revealing the features of the configuration and design of the PShM-32/130 model:
at prices starting from RUB 2,490.
The declared characteristics and low cost explain the popularity with a rectangular sole. The tool copes with leveling the outer corners of gypsum boards, reinforced with polymer putty, and with lumber, and with single-layer paint and varnish coatings. And thorough cleaning, timely replacement of consumables and monitoring the condition of loaded structural elements even allow you to count on long-term (non-intensive) operation. After all, the main purpose of this model is high-quality and unhurried work with wood, as indicated by:
- weight acceptable for processing horizontal planes;
- ability to adjust the vibration frequency of the sole;
- start button isolated from wood dust.
| Characteristics | Values |
|---|---|
| Platform/consumable L-length B-width, mm | “rectangle” / sandpaper L-230, B-115 |
| Abrasive fastening | Clamps |
| Amplitude/frequency of oscillations per Idling, mm / count. in a minute | 2.4 / 10500 |
| Power, W | 300 |
| Model options |
|
| Additional equipment | Dust collector, sanding paper. |
| Weight, kg | 2.3 |
| Development/production | Russia / China |
| Cost, rub. | 2490 |
Watch a short video review of the capabilities of the Interskol PShM-115/300E tool:
at prices starting from RUB 3,970.
Thanks to effective system removal of dust from the working area and the presence of electronic adjustment of the oscillation frequency, the model is deservedly popular among professionals. It is difficult for an amateur to appreciate the potential of the Makita 3711. After all, after processing unassembled joinery, another device will be needed to clean internal corners(its own 2 mm stroke does not allow working in the corners of three planes). Therefore, the combination of vibration amplitude, the area of the surface being processed, and the variable rate of vibration of the sole determine the narrow profile of the tool. It is designed for fine work with dissimilar materials, without volume restrictions.
| Characteristics | Values |
|---|---|
| Platform/consumable L-length B-width, mm | “Rectangle” / sanding paper L-228, B-93 |
| Abrasive fastening | Spring clamps |
| Amplitude/frequency of oscillations at idle, mm/number. in a minute | 2 / 22000 |
| Power, W | 190 |
| Model options |
|
| Additional equipment | Plastic jig for holes in sandpaper, dust collector. |
| Weight, kg | 1.6 |
| Development/production | Japan / Japan, Germany, China |
| Cost, rub. | 3970 |
Watch a short video review of the Makita 3711 sander:
Random orbital sanders (preparation for painting, intermediate sanding and polishing of plastic, metal and wood).
at prices starting from RUB 8,683.
- one of the universal sanders that has:
- vibration intensity adjustment,
- 2 vibration amplitude options,
- the ability to connect a bag or vacuum cleaner to the dust removal system;
Simplicity and reliability in use thanks to the Velcro abrasive fastening, durable plastic and molded base of the sole, as well as dust-proof controls. When an amateur simply uses a tool for a long time and gets an acceptable result, then professionals use the potential consciously, because they know that:
- “strangling” this grinder is not easy (the stabilization system instantly recognizes even insignificant pressure and regulates engine speed, preventing equipment wear);
- smooth start, sole brake eliminates damage to the surface being treated
- Properly implemented dust removal prevents premature wear of the working parts of the tool.
Watch a video review revealing all the features of the AEG EX 150 ES:
at prices starting from RUB 14,255.
- light weight,
- powerful engine,
- optimal vibration amplitude,
- worthy of the implemented dust removal and cooling system for the power unit
characteristic only of professional equipment. The presence of a system that controls the rotation speed (depending on the force applied to the tool) and a properly balanced two-handed body also indicate that the ER 05TE belongs to the category of sanders intended for intensive use. After all, regardless
- a vacuum cleaner or dust collector is connected to the dust extractor,
- what grain fraction is on the abrasive paper used,
- how long did the master work today,
The instrument rests equally firmly on the sole and can be controlled effortlessly even with one hand.
Watch a short video about the ease of operation of the Rupes ER 05TE sander:
at a price of RUB 20,986.
Models present in the arsenal
- 2 grinding options,
- speed stabilization system and soft start
- possibility of changing the speed of rotation of the sole,
directly indicate the versatility of the equipment. Rough and fine grinding of wood, metal and plastics, polishing paintwork on any of these materials is carried out quickly and efficiently.
In addition to the stated functionality, dust removal, carried out (by means of an impeller or an external vacuum cleaner) through holes in the sole, is also of considerable importance. The vertical location of the engine and a properly balanced body and handles with rubberized inserts reduce the load on the user’s hands during long-term operation. The bristles of the fastening system (“Velcro”) hold the abrasive sheet well at any speed and do not tend to become clogged with small particles, even when sanding gypsum-polymer coatings.
Watch a short video review describing the capabilities of the Makita BO6040 tool:
Corner welding machines (rough cleaning of metal surfaces, ends and welding seams; cutting of rolled metal; cleaning of hard-to-reach areas of wooden structures).
at prices starting from RUB 2,020.
By equipping the model with a thick (grinding) disc, you can:
- clean weld seams from slag
- get rid of pockets of corrosion
- grind large burrs on metal and irregularities on stone.
Using thin (cutting) wheels, this tool can quickly cut sheet and shaped metal products.
Possibility of installing an additional handle on the left or right side gear housing and fixing the protective cover in any position makes working with the tool convenient and safe, in different situations. But the most important feature of the 125-950 model is that the second such angle (with similar characteristics) for non-intensive use, does not exist on the domestic market.
Watch a video review of the model Zubr ushm 125-950:
at a price of 5,340 rub.
Declared potential and impressive appearance models 230/2100 indicate the advisability of using heavy angle grinders only professional builders. This CMM is capable of:
- Cleaning deep cuts, from 6 mm wide
- rough grinding of planes and welded joints
- sawing metal structures and chipping concrete walls,
The main handle, which rotates (with locking) by 1800, allows you to work without reducing productivity in any position. The relatively low spindle speed does not affect the quality of work. It is designed in such a way that it is supported at the edges of the installed disk (D 230mm). optimal speed movement of the abrasive edge (no more than 80 m/s).
Protection against accidental start-up provides an additional level of safety when operating heavy equipment.
View an overview of the capabilities of the Interskol UShM-230/2100M model:
at a price of 8,250 rub.
is one of the few professional earmachine devices that is purchased not only for professional work. Convenient placement of controls, low weight and insignificant vibration of the operating tool determine the choice of users. Although, reliable electronics are also of no small importance, providing smooth starting, constant speed control, user safety during voltage drops, coupled with the original mechanically preventing problems (when the disc gets jammed in the part being cut, during a kickback)
Watch a video review of the Makita GA6021C model, revealing the capabilities of the tool and the features of its design:
Brush sanders (cleaning and grinding of embossed metal, artificial aging of wood).
at prices starting from RUB 8,209.
A powerful motor and a relatively low brush rotation speed characterize the impressive potential of the most inexpensive of the popular CMMs. The purpose of such equipment is for rough cleaning or gentle grinding (depending on the consumables used) of textured (wooden, metal and plastic) surfaces. But this model is most often used for brushing (aging) wood.
- Locking the start button in the pressed position,
- convenient additional handle above protective casing brushes,
- rotation speed adjustment,
- Impressive torque from a powerful engine.
This set of functions in available equipment arouses a certain interest among those who like to create non-trivial products with my own hands.
| Characteristics | Values |
|---|---|
| Brush dimensions (D-diameter, L-length), mm | D-120, L-100 |
| Brush rotation speed rpm min | 3000 |
| Power, W | 1400 |
| Model options |
|
| Additional equipment | Side handle with bracket. Additional set of motor brushes. A set of necessary keys. Sanding brush |
| Weight, kg | 3.35 |
| Development/production | Russia / China |
| Cost, rub. | 8209 |
Watch a video review of the capabilities and configuration of the Sturm model! AG1014P:
at a price of RUB 25,310.
The low bristles of the brush included in the basic configuration of the model show good results when processing lumber from different types of wood, not only because of the special polymer bristles. Thanks to an acceptable combination of power and the tool’s own weight, quality will be present when working with each (appropriate for purpose) consumable.
- Simple design
- belt drive,
- low center of gravity,
- durable and comfortable handles
The tools do not leave even professional carpenters indifferent. After all, comparing the predisposition of the 9741 model to intensive use, and the small volumes of materials that need texture cleaning (even in workshops), we can confidently speak about a fairly long service life of the brush grinding tool.
Watch a short video review of the features and configuration of the Makita 9741 model:
at prices starting from RUB 35,265.
The nominal power of the tool allows you to count on the effective operation of the torque stabilization system. The electronics monitor changes in the drive rotation speed under uneven load and make the necessary adjustments to the operation of the low-speed electric motor. Therefore, working along the fibers, even at minimum speed, the master receives exceptionally high-quality results.
- Balanced design
- precision shaft rotation indicators,
- the ability to quickly replace consumables without the use of tools,
have made this tool in demand among specialists who work with hardwood.
Most of the surfaces that surround us are far from smooth and even. Rough concrete surface or natural stone, the wood covered with burrs and the plastered wall of the room need additional sanding. Previously, such processes were carried out manually, bringing uneven surfaces to perfect condition. A very long and labor-intensive process, practically not applicable on an industrial scale.
Grinding machines will help speed up and make work easier. Angular, tape, vibration... Different in design and power, design and price, they replace tedious, monotonous hand movements, making rough surfaces perfectly smooth. Different manufacturers offer many options, but you need to choose one, and it is advisable not to make a mistake.
We have compiled a list of the best grinders based on expert assessments and reviews from real customers. Our recommendations will help you make a choice that suits your needs and desires. There are many competitors in the global technology market, but we have selected the best manufacturers and recommend paying special attention to them:
Budget / Inexpensive
- DeWALT
- Hammer
- Makita
- BOSCH
- Makita
*Prices are correct at the time of publication and are subject to change without notice.
Sanders: Type: eccentric
Dust collector / Speed adjustment / Type: eccentric
Main advantages
- Universal grinder for processing materials of varying hardness. It can remove large layers of coarse sandpaper and perform a fine, neat finishing sanding of the product.
- The electric motor is equipped with reliable protection against contamination by dust or dirt and can withstand heavy loads during prolonged operation
- Surface treatment can be done in two ways - simple rotation or rotation with oscillations. This allows you to select the desired mode for a specific type of material
- Regardless of the load, the electronic control system maintains the desired number of revolutions, which improves rotational stability and processing quality
- The dust collector will save the room from harmful waste and preserve the health of personnel
Dust collector / Speed adjustment / Type: eccentric
Main advantages
- The lightweight sander (1.3 kg) is easy and comfortable to hold thanks to rubber pads on the body that reduce vibration and make it easier to grip and manipulate the tool.
- The wide and conveniently located start key makes it easy to start and stop the tool while working. The key itself is rubberized and protected from dirt and dust, which increases reliability and extends the service life of the sander.
- The durable motor easily withstands long-term loads, having 300 W of power in reserve
- Dust is removed through the base plate into a dust collector or a vacuum cleaner connected to the machine. To connect to the latter, an adapter is not required, which allows you to save on the purchase of additional accessories
Show all products in the category "Type: eccentric"
Sanders: Type: belt
Dust collector / Speed adjustment/ Type: tape
Main advantages
- Belt type sander, with the possibility of use both professionally and at home
- Convenient to use thanks to a well-balanced body, which makes it possible to use it in difficult operating conditions
- The electronic engine speed control system and automatic centering of the sanding belt ensure a stable load on the surface being processed during grinding work.
- Design features allow work to be carried out directly along the edge of the surface (near a wall or vertical elements furniture)
- Using the tool, you can process not only wooden parts, but also products made of stone, plastic or metal, which significantly expands the range of applications
Dust collector / Speed adjustment/ Type: tape
Main advantages
- Tool designed for sanding work on wood, fibreboard/chipboard, plywood or paintwork with a powerful 800 W motor and a belt length of 45 mm
- Rubber pads on the main handle and the presence of an additional handle allow you to conveniently fix the tool while working. This is especially true with high engine power to increase operator safety.
- Electronic speed control system from 120 to 290 m/min makes it possible to choose the optimal grinding option for a specific type of material
- Locking the “start” button will prevent accidental turning on of the machine and protect the operator from injury and the surface being treated from damage.
Dust collector / Speed adjustment/ Type: tape
Main advantages
- Belt sander with a power of 1200 W and a belt speed of 500 m/min is designed for processing various surfaces
- The machine body is made of impact-resistant reinforced plastic, resistant to mechanical damage, which increases operational reliability
- The speed regulator allows you to select the required operating mode for a specific type of material
- The "Start" button is equipped with a lock against accidental activation to increase safety and prevent injury
- Thanks to the installed dust collector, there is no dust suspension in the air and the surface being treated remains clean. This allows for better sanding control
Show all products in the category "Type: tape"
Grinders: Type: Angle
Type: corner
Main advantages
- Sander for working with wood, iron, stone and concrete with appropriate attachments
- Thanks to the special design of the gearbox, in a high-strength housing with improved heat dissipation, the grinder is not afraid of high loads and long operating time
- All important internal components of the tool are protected by labyrinth seals from dust and dirt, which increases the reliability of the tool and extends its service life
- The stator and rotor of the electric motor are covered with several protective layers of varnish and a nylon bandage. Abrasive dust and other types of contamination will not be able to get onto the turns of the electric motor winding and damage it.
- Long network cable provides good mobility
Type: corner
Main advantages
- Original gear housing design with increased strength and improved heat dissipation for increased reliability and longer tool life
- The variable position of the main handle will help you choose a comfortable position when working in difficult conditions or limited space
- When the brushes are completely worn out, they automatically turn off. Replacement is carried out without disassembling the tool
- The wide “off/on” key with IP5X dust protection is equipped with a lock against accidental start-up and a key lock for continuous operation, which will protect the user and help optimize the operation of the tool
- Inrush current can be limited to avoid surface damage and operator safety
Show all products in the category "Type: corner"
Grinders: Type: vibrating
Dust collector / Speed adjustment / Type: vibration
We devoted previous articles to screwdrivers, grinders, chain saws, jigsaws, mixers, spray guns, crosscut saws, jackhammers, hammer drills. Today, all our attention will be focused on the tool that uses sandpaper.
Sand or distress wooden part, take off paintwork, remove rust, grind off burrs, rub putty, process plastic, polish stone - all this and much more can be done by modern grinding machines. So, we offer the slogan: “Choose a grinder with us, choose like us, choose better than us!”
Sanding: This process causes discomfort for many, even at the mere mention of it. What can I say, grinding is a monotonous, labor-intensive, painstaking, dusty, sometimes noisy, slightly harmful operation, but, unfortunately, inevitable. Modern requirements for finishing works have reached unprecedented heights, no one questions the fact that the planes must be perfectly even and smooth. Finishing high-tech coatings are increasingly striving for thin layers and only highlight the shortcomings of the base. Even enlarged, with ready-made decorative coating leafy Construction Materials have to be joined, followed by caulking/puttying or seam sealing followed by sanding. Domestic builders, finishers and shop workers (manufacturers of furniture, carpentry, stone products, bulk polymers, metal) are slowly but surely getting used to new standards, previously unknown.
Fortunately, the materiel did not lag behind for long: the working people are helped to cope with the task by a highly specialized, relatively inexpensive tool - grinding machines, which we can no longer do without. Gone is the painfully familiar sandpaper, attached to a wooden block, or held in one’s hands. The leaders of capitalist production have produced many, many wonderful professional grinding devices designed for any occasion, without neglecting home craftsmen - those who like to create something with their own hands. Understand the variety of grinders and make right choice It’s actually not difficult, the main thing is to know what a particular tool is intended for, and also to clearly understand what tasks you will set for the grinder.
It is customary to distinguish three main types of grinding machines: belt, eccentric (orbital), surface grinding (vibrating). They all have their own specialization and form a unique cascade of capabilities, ranging from fast rough processing to delicate finishing grinding. Many of those who are closely associated with grinding “on duty” have in their arsenal a full set of tools of this class. Belt sanders are the heavy artillery for removing large layers from large surfaces. PShMs are oriented towards finishing. And ESMs are capable of producing even better results, bordering on polishing, but, compared to vibrating machines, they have a different operating principle and a different filling.
Belt sanders
Above, we inadvertently called the belt sander heavy artillery; in fact, it would be more appropriate to say “tank”. The working element of this well-recognized tool is an abrasive belt, glued together in the form of an endless ring, which moves along two end rollers and clearly resembles the track of a tracked vehicle. Such units are relatively powerful, they have a relatively simple, reliable design (angular gearbox plus V-belt drive), a low center of gravity, and a solid speed of movement of the abrasive material. Using a belt sander, you can easily remove a layer of material of a few millimeters, make an edge or rounding on a workpiece, or remove old paintwork or rust. The following are subject to it: wood, metal, polymers, mineral building materials... Clear the paint from the floors - yes, correct the planed timber - please, level up the putty wall with defects - no problem. However, it is worth understanding that high performance is not best friend quality, there will definitely be scratches and chips. For finishing sanding you will need to use an orbital or surface sander.
It is no secret that the performance of an electric tool is directly proportional to the power consumption of its motor - the higher it is, the more we can squeeze out of a particular unit. In the case of LSM, the consumer has the opportunity to choose from models with a motor from 0.5 to 1.2 kW (Skil Masters 7660MA - 1200 W).
Please note that tools from Chinese brands are often declared with inflated engine power ratings, or, if there really are stated watts, they are not balanced with the rest of the characteristics of the device. Record power is boasted by those manufacturers who have nothing else to show, except perhaps the heavy weight and bulkiness of the “unique” product.
The next important characteristic for a belt sander is speed. Obviously, it also needs to be taken into account to determine the capabilities of the tool. A fast machine will do more, but it will not be possible to pin it down if its outstanding speed is not supported by additional power. This is all due to the notorious torque, which says that the more speed a tool has, the less power it has left. A responsible manufacturer carefully balances these characteristics and makes them mutually changeable, for which smart electronics are sometimes responsible. The belt speed in these grinders can be in the range of 150-550 meters per minute (Fiolent MSHL1-100 - 550 m/min).
The question may arise: why produce fast, but relatively weak blades at all? It’s just that a super-productive (fast and at the same time strong) car is more difficult to control, it is heavier, larger, and more expensive. If pressed excessively, it can easily ruin the workpiece. In turn, with maneuverable high-speed lightweights it is convenient to treat the surface in a short time, often “on the spot” large area. If you don’t yet know what kind of loads await the grinder, choose a slower model that can be pressed a little, so it will be more versatile. Even more versatile are blade grinders with the ability to preset the speed mode (Sparky MBS 976, DeWalt DW433). Among them there are options with smooth or stepped adjustments.
It's time to talk about electronic systems that help in working with belt sanders. These machines are not rich in electronic stuffing, compared to other types electric tools. Everything is usually limited to regulating the speed of the belt. The switch responsible for this function is made in the form of a slider or a wheel with divisions. There are models with overheating protection (Metabo BAE 75). With some stretch, this includes the function of fixing the start button in the on position.
The situation is much more interesting with mechanical “bells and whistles”. The kit may include a stand or special clamps designed for stationary fastening of the tool (very convenient for processing small parts). The grinding frame serves as a kind of limiter that helps to avoid damage to the workpiece. A rip fence or miter gauge is useful for obtaining an accurate bevel or a smooth, parallel surface. The thin front roller in some LBMs (Black&Decker KA88) has a small diameter, which allows the dead zone in the inner corners to be reduced to a minimum. Automatic centering of the belt (the cunning barrel-shaped shape of one of the rollers) does not allow the latter to treacherously slide off at the most inopportune moment. An additional handle with variable tilt or removable will significantly increase the functionality of the machine in “squeezed” places - sometimes noticeably.
Special attention should be paid to the dimensions of the working plane - the sole, respectively, the length and width of the tape. Wide soles (100 mm) are typical for powerful professional models, making them more stable and productive. The hobby class is usually limited to 75 millimeters. The long and wide sole of expensive blades has a complex design, consisting of a backing and an elastic plate, which allows for constant, uniform contact between the sandpaper and the part; such a tool “holds its plane” well. It is necessary to mention “ribbons” with narrow equipment - these are the so-called “electric files”, which are not very powerful and versatile, but specialists value them for their unprecedented compactness (for example, Makita 9032 with a tape only 9 mm wide).
All belt machines have a dust removal system, but not all of them work equally effectively. The fight against dust is carried out either using a vacuum cleaner connected through the pipe, or by collecting it in a bag with a built-in filter. Of course, a vacuum cleaner is preferable, especially when sanding mineral substrates. In ultra-cheap models, the impeller responsible for air suction does not cope with its function, the channels quickly become clogged, and a lot of harmful “flour” remains in the air.
Surface grinding (vibrating) machines
If we take into account the cleanliness of the processing of parts, then surface grinders occupy an intermediate position between belt and orbital ones. With their help, they carry out finishing grinding of flat surfaces made of a wide variety of materials - plastic, wood, stone, metal... Thanks to the relatively large working plane, the PSM is suitable for working with serious quadrature. The secret to the popularity of vibrating sanders lies in their moderate cost, the availability of equipment elements, and the absence of dead processing zones (the flat out-mounted sole easily handles corners).
The main working body of a surface grinder is a plate, which makes frequent reciprocating movements with a small amplitude. The motor in such machines is located vertically, which makes it possible, using the “eccentric-counterweight” tandem, to convert the rotational movements of the shaft into translational movements of the platform.
Most vibrating grinders traditionally boast a motor power of 150-300 W; they are quite maneuverable, moderately light and compact. This level of power plant is almost always sufficient. However, such unanimity among manufacturers would be, at least, strange - there are models with a power of up to 600 W (Makita 9046). They are, of course, heavier and larger, but can work at low speeds for a long time without overheating.
The most important indicator of the PSM is the amplitude of the sole stroke. IN different models it may vary, although it is invariably a relatively small value. On average for the class, the platform moves by 1-3 mm; in more mobile models figures of 5-6 mm may appear (Festool RS 100). A larger amplitude helps to polish the surface faster, but such processing will also be rougher.
Another nuance is the frequency of the sole stroke. At high speed the machine will quickly remove a relatively thicker layer, while at lower speed it is easier to achieve a precise finish sanding. Some manufacturers make the frequency of movement of the platform variable, exceeding 20,000 strokes per minute (Bosch GSS 280 AE L-BOXX), which allows you to adapt to the processing various types materials, tailored to the characteristics of specific surfaces.
When choosing a vibrating sander, special attention must be paid to the platform. With its dimensions, everything is quite simple, there are two options: a kind of “standard” and “mini” models - the plate area is about 100 mm 2 (Makita BO4557, Sparky MP 250). Toddlers are good for tight, tight spaces. Obviously, the sole must be of high quality, perfectly flat, with clear geometric shapes. Budget machines are equipped with a platform made of steel or high-strength plastic, while more expensive analogues are equipped with cast platforms made of alloys containing aluminum or magnesium (Festool RS 100). A good sole is characterized by precise balancing, which is easily determined by a low degree of vibration when operating without load (idling). It is also important what the pad is made of, the most suitable option- this is a porous polymer, it “holds” the plane better than rubber.
Vibratory grinders with a delta-shaped platform are included in a separate class; they are popularly called “irons” (Hitachi SV12SH, Makita BO4565). Due to their miniature size and good maneuverability, they are used for processing objects with small parts and complex surfaces, such as furniture, carpentry, staircase elements, and car body. Their triangular platforms are rotary - you can continue to work unevenly “eaten” by a petal of sandpaper (Festool Deltex DX 93E) or removable (with quick installation of another type of platform - for concave/convex surfaces, for structuring, polishing, rubbing).
Emery can be attached to the site in different ways. It is more convenient when the paper is secured with Velcro, but special equipment is relatively expensive. The option with spring-loaded clamps is somewhat more complicated, but you can use inexpensive sanding paper cut by yourself (costs only in the right places make holes for dust removal).
The fight against fine dust, which inevitably forms when using a grinder, poses many challenges for developers. They have to work hard to protect all mechanisms. IN in this case special sealing of the motor, protected bearings and switches, an impenetrable housing, and a channel system with forced dust extraction are used. To remove dust from working area and does not saturate the air, it is directed into a collection bag or filter; in most cases, a vacuum cleaner can be connected to the nozzle - this is the most effective method protection.
Eccentric (orbital) sanders
This type of sander is designed for high quality processing. Delicate grinding and even polishing are their element, although the performance of such devices can be no less impressive than that of vibrating machines. They can handle any material; most often you will find ESMs among woodworkers and car painters. When working with profile, volumetric, curved objects, eccentric sanders have no equal, and they also have no problems with planes. The only place where such a machine fails is in corners and small recesses - the “plate” simply won’t reach there.
Just like surface grinding units, “orbitals” have an eccentric and a counterweight, with the help of which the round grinding plate not only moves around its axis, but also along an “orbit” with a small amplitude. Interestingly, axial movement usually occurs by inertia, and in some models it is forced (via a gear transmission - Kress 900 MPS). This complex movement of the working blade, coupled with the highest rotation speed, is what makes it possible to obtain a surface of excellent quality, without depressions, waves and scratches.
From 200 to 900 watts - this is how much the motors of modern electric motors consume. Those that are more powerful will naturally be more productive; they can easily handle a larger sole, up to 150 mm in diameter (for example, the 400-watt Bosch GEX 125-150 AVE or Interskol EShM-150/600E).
Bosch GEX 125-150 AVE
Orbital machines also have differences in the speed of translational motion. If we talk about rotation, this figure can be from 4 to 14 thousand eccentric revolutions per minute for models with adjustment (Metabo SXE 425), and about 12,000 for models without it. If we talk about the concept of “fluctuation”, then these figures will be half as much. In fact, everything is simple here: the higher the speed, the rougher the processing will be, but the faster the work can be done.
The eccentric of orbital machines may not have the same “span” - from 2 to 7 mm (Festool WTS 150/7 E-Plus). This is called the amplitude of the oscillation. The smaller it is, the less vibration the device generates, the more compact the plate moves, the smaller the area we process, but the cleaner the grinding will be. In some ESMs, the operator can set a certain amplitude, affecting the productivity and fineness of grinding.
Compared to their counterparts (LSM and PShM), “orbitals” are usually well equipped with electronics. We have already talked about setting speed and amplitude, in addition to this professional tool They are equipped with an automatic frequency maintenance system (Bosch GEX 150 Turbo) so that it does not drop under load - this is constant electronics. Some models have an electrodynamic brake (AEG EX150ED K), which, after turning off the “start” button, instantly stops the work plate, preventing damage to the workpiece and reducing the possibility of injury. For powerful professional machines, a starting current limiter can be provided (Makita BO6040 ), which smoothly accelerates the tool, preventing a starting jerk and protecting the network from short-term, but significantly increased load.
Very nice options include a removable power cable, an adjustable or removable front handle, a locking start button, and functional dust removal.
Be sure to pay attention to the type of sanding pad. Firstly, if you need particularly delicate processing, do not chase a large plate; by the way, it has a larger dead zone and an amplitude of about 5-7 mm. The plate, made of metal, has stability, high strength and excellent heat dissipation. The elastic plate copes well with convex surfaces. All of them have Velcro for fixing the sandpaper and holes for dust extraction. These holes from individual manufacturers may vary in size, number and location; according to this feature, you need to select the appropriate equipment.
If the financial issue is not the least important, then for your home workshop you can purchase a model from the “hobby” category. Good examples are offered by Makita, Black&Decker, Skil, Sparky, Bosch. Look away domestic manufacturer— Interskol and Fiolent have noticeably improved in terms of the quality and functionality of their tools.
Pay attention to the weight and dimensions of the product you are interested in, especially if a lot of work is planned “on the spot”, on weight, on outstretched arms. Give preference to a car that is not too powerful, but rather a faster one; it will be lighter, more compact and cheaper. But for regular operations on a workbench, the large weight of the device will be more of a plus than a minus.
Be sure to thoroughly “feel” the grinder and find the one that best suits your ergonomics. Decide on the type of main and additional handle; most likely you will have to choose between a “mushroom” and a “brace”. See if the switches are conveniently located and how they work, how easy it is to change the equipment, and whether the power cord is in the way.
Check the moving parts of the product for play. Look at the accuracy of the fit of the body parts. Turn on the car in a tool store, at least at idle speed, evaluate the level of noise and vibration. Ask about the cost, range and possibility of interchangeability of consumables.
Weigh all the pros and cons, take your time with the choice, then the whole repair will go smoothly.
Construction or restoration work requires the purchase of a tool for finishing wood (a wood grinder), but which model should you choose? It depends on its purpose, since the tool is multifunctional. The selection criteria are largely influenced by the characteristics of the surfaces being processed: their size or the complexity of the design with many hard-to-reach places. Equally important is the size of the budget allocated for restoration or construction, as well as the experience of the craftsman and his skills in working with tools for sanding wood.
If you need a sander for home use (minor repairs, hobbies), choose simple and quite budget models.
They are light and small in size. To process large volumes of construction or production work (for example, in a furniture workshop), it would be more successful to purchase powerful units.
The following types of woodworking sanders are distinguished:
- tape;
- vibration;
- eccentric;
- angular;
- renovator;
- brush.
Belt sander
It is beneficial to choose such a tool if you need to effectively remove large layers of material (for example, old paint), sand boards, process cut lines and accurately adjust the surfaces of parts.
These units are very powerful, and if the master does not have enough experience, then there is a danger of ruining the surface being treated. Working with a belt sander requires some skill. But with a little practice, you can quite easily, quickly and efficiently process a large area.
When choosing a grinding machine of this type, you need to make sure that you have the necessary equipment: models produced by different manufacturers are equipped with abrasive belts of various sizes.
Inexpensive models have a basic set of features:
- Speed control switch.
- Thermal protection of the motor.
- A nozzle for connecting a vacuum cleaner (or a dust collector).
Vibration sander
A vibrating machine is a tool for a more “delicate” effect on the surface of the wood. The work surface is often rectangular in shape, which makes it convenient for sanding corners.
The main criteria when choosing this particular type of machine are:
- Dimensions of the working surface (sole). This parameter directly affects the speed of work performed.
- Sole shape. The rectangular surface can be supplemented with a triangular wedge to work in hard to reach places.
- The amplitude of the machine’s movements: as it increases, the processing speed increases. But this may affect the quality of grinding.
- Method of fixing an abrasive surface. There are several possible options: clips, Velcro, combined method.
- Possibility of adjusting the speed of movement: for different woods it may be different.
- A way to get rid of chips and dust.
The parameters of grinders that you should pay attention to in this case are:
- Platform size (diagonal or triangle area).
- Tool performance, which is directly related to the oscillation frequency (up to 2600 counts/min).
- Weight (about 1 kg)
- Power (most often from 300 to 200 W).
Random orbital sander
An eccentric or orbital machine processes the wood until it is completely polished.
The eccentric machine processes the wood until it is completely polished.
Difficult areas are processed in a different way, often manually. This design is distinguished by a complex trajectory of movement of the working surface: the sole of the machine makes rotational and oscillatory-orbital movements. Pneumatic models are most convenient to use.
This type of tool is the most expensive. Moreover, pneumatic models of grinders must be equipped with a high-performance compressor. This is not always possible when household use. Most often, such a tool is used in production.
If the shape of the surface is triangular (delta grinder), then such a tool is used if it is necessary to work in hard-to-reach places. This makes it possible to avoid manual sanding. The abrasive paper is attached to the base using Velcro, which makes it quick and easy to replace.
The speed of its work is very high. This model brings any detail to perfect smoothness, but it can only be used to work on large and even surfaces.
Additional devices
Corner grinding machines have high performance, which is explained by the presence of a powerful drive and high speed of the equipment. However, a significant drawback of the model is the inability to process internal corners. Delta nozzles or renovators are more suitable for grinding them.
The renovator is similar to the delta modification of the vibration machine, but has significantly greater functionality.
The list of its capabilities includes:
- polishing and sanding wood and other materials;
- creating slots;
- cleaning walls and other surfaces from linoleum, tiles, etc.;
- local repairs of power structures and cladding.
A professional tool of this type is equipped with a warning device that notifies with sound signals of excessive load on the surface being processed. Depending on the volume of the surface being processed and the tasks assigned, the master may prefer a model with a two-handed grip. This is convenient if you need to work for a long time. The advantage of one-handed models is their compactness.
Moreover, manufacturers are constantly increasing the number of possible operations performed by the tool. Additional advantages of the renovator are its ability to work both from the network and from a battery, low power consumption, and a very affordable price. Brushing machines do not use an abrasive belt, but metal brushes. This type of tool is convenient for processing large surfaces. It is used to remove old coating.
The features of each unit make it effective in performing certain tasks:
- The belt sander works well on large, flat surfaces, for example, voluminous parts of simple configuration. But this type of tool is not very convenient for processing small items.
- Vibratory grinders have average productivity and are effective for processing parts various shapes, do not leave traces, and are economical in energy consumption.
- Eccentric models are good for achieving High Quality processing: grinding or polishing.
- Renovator or delta modification is a tool for designing furniture. It is also used for interior finishing work with wooden elements.
Such units cannot operate continuously; operation will have to be stopped every 15 minutes. The most universal model is considered to be a belt sander. It is suitable for processing not only wood, but also other types of surfaces (plastic, metal), and can be useful for both professionals and amateur craftsmen. Expensive professional grinders can operate non-stop for a full working day. They also have the function of centering the abrasive belt, which saves material.
To make the work easier, the master can equip the grinding machine with a stand on which the tool is attached. When performing grinding, you can move, rotate, and guide the material itself, and not the heavy unit. If the work continues for a long time, then even if you have a relatively small machine, it is much easier to manipulate the workpiece.
If you need to achieve the most even and smooth plane, you can’t do without. With its help, the work, if not done by itself, will at least require much less time and effort. One thing remains - to understand how to choose a grinder from a great variety of types.
The basic principle is this: the design determines the scope of application. Let's look at the different types of grinders, starting with the most popular. We hope this review helps you understand which sander is best for your needs.
Designed for roughing large surfaces or removing rust or paint. A distinctive feature is a high level of productivity.
Provide good processing quality for both rough and fine grinding. Equipment - abrasive sheets with Velcro or simple sandpaper, which is attached to clamps.
They differ from the previous type in the shape of the sole - these sanders have a deltoid shape (iron). Optimally suited for tasks of increased complexity: for example, sanding stairs, furniture, skirting boards.
Used for fine grinding, including complex and curved surfaces. The speed of operation is also impressive.
Angle grinders are often used for cutting. However, the grinder will cope with grinding with a bang. She can process materials such as concrete, stone, ceramics or metal. Just don't expect very high surface quality.
Tool for professionals
Listed above are 5 types of sanders that a home DIYer may need. Next, we will consider more specialized varieties.
Tool for decorative surface treatment. Helps highlight the texture of the wood. Also used for cleaning surfaces from rust or paint. The name is given by the type of equipment - hard brushes made of metal, nylon or polymers.
The main purpose is to clean welds, remove burrs and rust. Designed for intensive work.
They are used to level hard surfaces of materials such as concrete, granite, and stone. Dust extraction is required. Some models can be wet sanded.
Top 3 most popular grinders
It is quite difficult to choose which sander is better from those presented. We have compiled a short rating of the best models (according to users):
- MAKITA BO3711 is a surface grinder. Recommended for finishing.
- HAMMER LSM810 - belt sander. It stands out from other models with its power (810 W).
- HAMMER OSM430 - eccentric sander. Suitable for working with various materials.
Leading manufacturers
Before choosing a grinder, we recommend paying attention to the brand.
