Rating of the best delta sanders for 2020

Delta grinders (DShM) are one of the varieties of a simple grinder. They consist, as a rule, of a platform on which a production tool (sanding sheet) and other equipment are mounted, as well as a body made of plastic with a special dust collector. An engine with a moving element - a rotor (anchor) is installed under the body itself. Due to the rotation of the anchor, the platform comes into motion. DShM produces progressive-return movements with a vibration frequency of 2-3 mm and it is due to them that the processed surface is polished.

The tool can weigh between 0.8 and 1.8 kg. The equipment is quite light in itself and is very maneuverable, it is easy to operate. He actually lacks any handle, there is only an upper protrusion, for which the tool is actually held by the user. The operator puts his hand on this ledge and drives the machine over the surface - this process is very similar to controlling a trackball or a computer mouse. The pressure on the surface can be increased, thereby regulating the vibrations of the work platform through the action of the counterweight to the crankshaft. Such an operation will reduce the recoil on the operator's hand, and he will be less tired.

Difference of DShM from other grinders

It consists in the shape of the work surface, which is made in the form of a triangle (ie, the Greek letter "delta") and is more reminiscent of an ordinary household iron. The sharp nose of the tool allows you to grind grooves, deep notches or sharp corners.

Sandpaper, angle grinder and multitool - is it a worthy replacement for DShM?

Each construction tool has its own tasks and scope. So, you can sand the surface with sandpaper, however, this will require a lot of muscular effort, and this method is suitable only for small surfaces. But ideally "sanding" boards 20 in a row with the help of sandpaper will not work - the person will simply get tired.

In turn, the angle grinder will not be able to penetrate into hard-to-reach places, since its working platform is circular, and it will rest against the walls of the part.

But a multitool (from the English "multitool" - a multifunctional tool) can cope with almost (!) With any work, because.both grinding attachments and sawing discs can be installed on it, and it does not take up much space. To perform the role of a delta grinder, a special triangular platform with dimensions of 0.93 x 0.93 x 0.93 cm is installed on the multitool. Such equipment will show itself perfectly if it is necessary, for example, to clean up paintwork traces in the shutters. However, if processing of a large number of elements is required (for example, corners in a bath array), then it would be better to use a specialized DShM.

Purpose of delta sander

The main options for its application are:

• Penetration and machining of narrow spaces, for example, turning the edges of rounded holes;
• Removing traces of paintwork materials from the joints of the beams, when it is impossible to get to the right place even with the help of sandpaper;
• Elimination of finishing blemishes, such as: removal of dirt, glue residues, paint traces from the inside of the joints;
• Final grinding work in order to eliminate chipping, creases, and other extraneous traces;
• Removing dried paint from boards, concrete walls, lining, when such an operation is required before re-painting;
• Careful sanding of uneven walls after applying putty in order to prevent cracking;
• Removal of moldy growths and fungus formed in the corners or joints of wooden beams.

Delta sanders work best with wood surfaces. The process of their processing runs smoothly and evenly, therefore, with sufficient skill, it is simply impossible to leave any cuts or traces of rough grinding. But trying to grind a large area of ​​a flat surface with such a machine is not a good idea, since the DShM has its own specific purpose, and for such work it is better to use a conventional grinder.

In addition, the DShM tool is also capable of processing hard surfaces, for example, stone or concrete - it will be great to clean off frozen smudges or drops from them. It is also possible to process metal objects, for example, when it is necessary to remove metal rust in a hard-to-reach place. This tool shows itself especially well during the renovation of artistic forging structures, where, at times, it is impossible to get close to individual figured monograms with either an emery or a grinder.

Household and professional DShM

Delta grinding tools can differ in the degree of possible stress and field of application. As a rule, professional DShM are capable of:

• Withstand high work intensity;
• Work for a long time period;
• Do not need breaks between operating periods (for example, a household appliance usually needs a "rest" every 20 minutes of operation).

Among other things, professional cars are usually distinguished by:

• A complete set of various attachments and implements that comes immediately as part of the basic configuration;
• Excellent quality of mechanical and electronic parts used in construction;
• Increased power;
• Increased productivity;
• High price;
• Increased requirements for maintenance and repair (such DSHM are hardly possible to repair at home).

A significant drawback of a professional tool is also its heavy weight. And the main disadvantage of the household DShM is the extremely short operating time - home models are designed only for use a couple of times a week, and even then for several hours.

The choice of machines for various types of work

Depending on the construction task at hand, you need to select a DSHM with the appropriate characteristics:

• Household work carried out from time to time (episodic) - for such tasks a household model with a power of 80 to 125 W is suitable, which is quite enough to clean an old stool from drops of new paint or several corners of a bath from fungus or mold;
• Permanent work - it is better for a professional carpenter who works almost daily to choose a machine with a power of 200 to 300 W;
• Performing delicate grinding - here you will need to build on the frequency of the vibrations produced by the tool. For example, small burrs from the lining are perfectly removed with a machine with an indicator of 8000-10000 vibrations per minute.
• Performing rough grinding - here you will need a professional tool with an increased amount of vibration. Hard materials (stone, concrete, metal) are usually subjected to rough processing. Experts recommend at least 14,000 - 24,000 vibrations per minute for such work.
• Small surface treatment - in this case it is better to use a multitool with attachments or a delta sander with a reduced working surface (0.93 x 0.93 x 0.93 cm).
• Processing large surfaces - often this is required by metal sheets and wide boards. The maximum possible working sole of the DShM has dimensions of 235 x 112 x 145 mm.

Selection and installation of additional equipment

A special triangular sanding sheet is installed on the DShM as a working surface. It should be the same size as the tool platform and preferably from the same manufacturer. If these requirements are met, there will be no risk that the holes on the sheet and platform will not match. Namely, through these holes, wood dust is removed during the operation of the device. Depending on the construction task, sanding sheets of the appropriate grain size are selected - for delicate sanding fine grains are suitable, for coarse sanding coarser grains are necessary.

The main problem may be the search for a sheet that will be "native" for a particular DSHM. But experts from construction offer the following way out of this situation: if a triangular sheet cannot be found in any way, then it is quite possible to buy a round one (of the same brand), but with such a size that it fits into all the corners of the triangular sole. Then it remains only to trim the protruding edges. And the holes for the dust collector can be made independently (even two or three holes will be enough).

Competent operation of DShM

The long service life of the tool will be facilitated by constant maintenance and keeping the equipment clean. After using the machine, it is necessary to clean the dust suction holes, wipe the working platform itself, remove clogged wood dust from hard-to-reach places of the case. The working elements of the DShM are recommended to be changed every five years.

Rating of the best delta sanders for 2020

Mains powered equipment

5th place: Interskol PShM-32/130

Due to the increased size of the sole, the operator is able to navigate areas of significant size faster. The model has a power button that can be locked for a period of operation. Compared to competitors, this sample is presented on the market at a very attractive price. According to Yandex.Market, this delta sander has the most reviews.

Specifications:

Name	Index
Power, W	130
Oscillations, number / min	11000
Weight, kg	0.95
Sole length and width, mm	140 x 80
Manufacturer	Russia
Warranty, years	2
Price, rubles	2000

• Power button lock;
• Low weight;
• Large dust bag.

• Extremely short cable (only 2 m).

4th place: BOSCH PSM Primo

One of the most controversial, but at the same time, popular models on the Russian market. With its low power of 50 W, the device produces 24,000 vibrations per minute. Due to its extremely low weight, the hand does not get tired when working with this DSHM. The ergonomic control surface has a rubberized gasket that prevents the tool from sliding in the hand. There is a button for fixing the working stroke.

Specifications:

Name	Index
Power, W	50
Oscillations, number / min	24000
Weight, kg	0.6
Manufacturer	Germany
Warranty, years	2
Price, rubles	3400

• Refraction protection of the electrical wire;
• Large dust collector;
• High vibration frequency.

• The set includes only one sanding sheet.

3rd place: RYOBI RMS180-SA30

This grinder specializes in the treatment of hard-to-reach places, which requires the elongated design of its body. The model is positioned on the market as a semi-professional, the frequency of the generated vibrations can be reduced when delicate grinding is required. The fixation of the tool (sanding sheet) on the sole is done not only with Velcro, but also with clamps.

Specifications:

Name	Index
Power, W	180
Oscillations, number / min	12000
Weight, kg	1.88
Working surface, mm	26x57 and 185x92
Manufacturer	Japan
Warranty, years	2
Price, rubles	4500

• Has an extremely thin nose (almost any place is accessible);
• 30 abrasive sanding sheets included;
• Oscillation frequency adjustment.

• Very rigid cable for mains supply.

2nd place: Metabo FMS 200

Very powerful and reliable device, perfect for daily use and large-scale applications. This model works well with both wood and hard materials. Due to the increased power, it can be used to clean art forging items from corrosion. The power button, although not fixed, is placed on the end, which avoids accidental pressing and accidental shutdown.

Specifications:

Name	Index
Power, W	200
Oscillations, number / min	26000
Weight, kg	1.2
Working surface, mm	147x100
Manufacturer	Germany
Warranty, years	1.8
Price, rubles	4900

• Relatively light weight;
• Effective built-in vacuum cleaner;
• Large working tape.

• The working platform cannot be rotated.

1st place: Metabo SRE 3185

Another completely professional tool. Thanks to the unusual shapes of its sole, it is able to process both the surfaces of the correct areas and to sharpen corners in hard-to-reach places. Its sole is removable and can be replaced with any shape: round, triangular, square. In fact, this sample can be classified as a "multitool", but all the available nozzles are not supplied in the basic configuration, and it is rather difficult to find them.

Specifications:

Name	Index
Power, W	210
Oscillations, number / min	20400
Weight, kg	1.5
Working surface, mm	Depending on the sole used
Manufacturer	Germany
Warranty, years	2
Price, rubles	8900

• Advanced functionality;
• Low weight;
• Good absorption with an internal vacuum cleaner.

• Difficulty finding replaceable soles.

Battery Operated Equipment

5th place: Einhell TE-OS 18/1 Li - Solo 4460713

An excellent and compact tool designed for high-quality processing of various surfaces. Perfect for sanding hard-to-reach corners. The system of special fasteners "Extreme Fix" allows you to change the equipment in the shortest possible time. The model provides a dust extraction system.

Specifications:

Name	Index
Battery voltage, V	18
Weight, kg	0.7
Battery type	Lithium ion
Working surface, mm	150x150x100
Rotation frequency, number / min	24000
Manufacturer	China
Price, rubles	1700

• Versatility;
• Active dust collector;
• Fitted with aluminum fan fenders for smooth running.

• Basic equipment does not include a battery or charger

4th place: Ryobi R18PS-0 5133002443

Standard DSHM for home use. Especially not designed for heavy loads. Due to its low weight, it is also suitable for working on large surfaces and for leveling corners and slopes. In short-term operation, it can clean solid materials from dirt and rust.

Specifications:

Name	Index
Battery voltage, V	18
Weight, kg	1.1
Battery type	Lithium-ion
Working surface, mm	140x100
Rotation frequency, number / min	22000
Manufacturer	Japan
Price, rubles	2100

• 6 sanding sheets as standard;
• The equipment is installed on the working platform by means of Velcro;
• There is an adjustment of the vibration frequency.

• Does not come with batteries or charger.

3rd place: Black & Decker BDCDS12N-XJ

The compact and reliable tool is designed more for the production of one-time general construction work. The design of the model is made in a special lightweight form, which makes the operation of the tool extremely simple. To carry out the dust collection process, you can connect any household vacuum cleaner to the device. The body is made of durable materials.

Specifications:

Name	Index
Battery voltage, V	12
Weight, kg	0.6
Battery type	Lithium-ion
Working surface, mm	130x110
Rotation frequency, number / min	11000
Manufacturer	Germany
Price, rubles	3100

• Improved dust collector;
• Protection of the power button from accidental interruption of work;
• Good build quality.

• Low battery capacity (1 hour of operation).

2nd place: Bosch EasySander 12 060397690B

This sample can be attributed to the multitool range. Works ideally in hard-to-reach places and small surfaces. The device uses Bosch Sineon Chip technology, thanks to which the battery charge level is consumed by 20% less. The sole consists of two elements - they can be used separately from each other and separately attach sanding sheets to them, as well as rotate. It is possible to connect a household vacuum cleaner.

Specifications:

Name	Index
Battery voltage, V	12
Weight, kg	0.7
Battery type	Lithium-ion
Working surface, mm	300x125
Rotation frequency, number / min	22000
Manufacturer	Germany
Price, rubles	5600

• Advanced functionality;
• Compactness;
• Increased battery capacity.

• Relatively high price.

1st Place: Ryobi R12PS-L13S

This DShM is intended for finishing work on surface treatment and preparing them for painting. The model has a special pull-out strip for working in the most inaccessible places. In addition, DShM is equipped with its own DastTech dust removal system, and a special coating of the GripZon body ensures its durability. The machine has excellent handling.

Specifications:

Name	Index
Battery voltage, V	12
Weight, kg	0.7
Battery type	Lithium-ion
Working surface, mm	124x20
Rotation frequency, number / min	22000
Manufacturer	Germany
Price, rubles	7100

• A rare case when the battery is included in the basic package;
• The set also includes 6 sanding sheets;
• The device is provided with a convenient carrying case.

• Relatively small working surface.

Instead of an epilogue

Having studied the Russian market of delta grinders, we can unequivocally assert that Russian retail outlets are extremely dishonest in this segment. This is especially true of the completeness of the supplied models - shops in the Russian Federation simply dismantle the equipment and sell related parts (batteries, sanding sheets, chargers, removable soles) separately. This conclusion is confirmed by a visit to the official websites of well-known foreign manufacturers, where all such elements are immediately included in the basic configuration. Thus, it is better to purchase DShM directly from the manufacturer, even if it will cost a little more.