How to change the sanding block on the grinder

When we look at store-bought furniture, we notice that the corners are lightly sanded. This helps the product look finished and also helps prevent dents and chipping around the edges.

We can get the same look for our projects. All that’s needed. This is 2 to 3 passes with the sanding block to make our part look finished. We can also continue sanding to give the edges a more rounded look, which is good for rustic pieces.

change, sanding, block, grinder

How and what to clean a petal grinding wheel

In that case, a legitimate question arises, how to clean sandpaper. For this reason, cleaning helps to prolong the life of such a tool, and it will be possible to work with it as good as new. There is another way to clean a flap wheel, and that is the use of a disc with diamond flecks. In order to restore a grinding wheel to its pristine appearance, it will need to be applied to the face or sides, and do so with care, because in fact, the surface of a grinding wheel can easily be damaged.

You can use a special stone to clean a petal grinding wheel, and then the disk will rotate, and the movement must be performed from the edge to the very center. In a similar way you can clean the edges of the disk, in a couple of seconds, the tested in the action will bring the nozzle in working condition. This is quite simple, but there are many other ways and technologies for such a procedure. At home, you can apply those methods that are simpler, which will help save the working wheels from getting greasy.

Velcro for self-gripping abrasive paper

If you do a lot of construction and finishing work, then you probably have to sand some surfaces very often. It’s no secret that this is done with ordinary sandpaper, which becomes worthless in a very short time. If we compare the price of one sheet of sandpaper and a circle on velcro, the price will be exactly the same, but the circle has a diameter of 12 centimeters, and the leaf size is three times larger than this circle.

Watch a video of how you can make three disks of sandpaper with velcro

For the work we will need: 1 round purchased disk; a standard size sheet of sandpaper; double sided tape; scissors.

We need a base, to which we will attach the sandpaper and tape.

Then we take the double sided adhesive tape and cut off a big piece of it, which we glue to the center of our circle. Scotch tape must be taken very, very sticky, otherwise it will not hold

Now cut about 8 small pieces from the tape and glue them around the perimeter.

Now we remove the protective film from the tape.

Take our sheet of sandpaper and turn it rough to the table surface.

In the corner of the sandpaper glue our workpiece. Be sure to glue to the corner, otherwise we will waste a lot of sandpaper for nothing.Now we have to cut it all out.

The disk is almost ready, the last thing is to make holes in the disk. To make the holes we take a drill and any wood drill bit.

Now we put any wood on the table, put the drill in reverse and start making holes.

All our grinding disc ready, now it can be hooked on the machine and use.

This approach has several pluses. Firstly it is cheap, and secondly there is no need to run to the store if you ran out of round discs with velcro. In. thirdly from a sheet you can cut a disk, if the necessary mushrooming is not on the counter.

Of the minuses, although it is one, but it is there. You have to make the discs with your own hands and spend your time and effort.

Grinding wheel Zubr master universal, of abrasive.

Abrasive on a fabric basis for grinders on pa.

Sanding pad for manual application K.

Sanding pad FIT, 125 mm

Sanding pad Velcro 150 mm, P180, 25 pcs. DeWal.

Sanding pad for Mirka grinder protective D-125 m.

Abrasive fabric backing pad for floor sanding machines.

Sanding belt for belt sander MESS.

Wood, paint sanding disc Bosch (5 pcs; 125 mm).

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Sanding pad Metabo 625621000 115103.

Sanding pad Metabo Velcro 625607000 10.

STAYER MASTER Velcro grinding disc, universal.

Sanding pad with Velcro, 125 mm, P40, 5 pcs., with holes.

STAYER 35451-115-120, MAST, Velcro sanding disc.

Sanding pad in roll Hammer Flex 216-011

Velcro sanding pad for MIRKA VELCRO CONVERSION KIT V.

Sanding pad for DeWALT eccentric sanders.

BlackDecker MultiEvo X31437-XJ Sanding paper P6.

Sanding disc FIT with Velcro, with holes 125mm P150.

BlackDecker MultiEvo X31452-XJ Sandpaper P1.

Sanding pad in a roll Zubr 35621-080

Sandpaper water-resistant sandpaper for Velcro P150 D125 (10 pcs.).

Zubr standard grinding wheel with Velcro.

Zubr grinding wheel “master” universal.

Sanding paper waterproof for Velcro P150 D125 (10 pcs.).

Zubr grinding wheel “master” universal.

Belgorod Sandpaper 6 (775) 1 roll 30m/p

5200201 Backing pad with Velcro base for universal sanding. Vel.

125 mm sanding pad Velcro grinding disc, P320, 25 pcs. DeWal.

angle grinder sanding discs DIY

Zubr Sanding pad on a fabric basis in a roll.

Sanding pad for DeWALT eccentric sanders.

Circle with Velcro STAYER 35450-115-060, MAST.

Zubr grinding wheel “master” universal.

Sanding belt for belt sander MESS.

Zubr grinding wheel “master” universal.

Velcro sanding disc 125 mm, P320, 25 pcs. DeWal.

50 pcs Sanding pad.Hanko Velcro disc (mesh) d150 p320

Belgorod Sanding pad 00 (775) 1 roll 20m/p

Sanding pad in a roll Belgorod M40 (p400) roll.

Circle sanding FIT with Velcro, with holes 125mm P36.

Sanding disc with Velcro 125 mm P80 8 holes 5 pcs.

Zubr Sanding sandpaper water-resistant on a fabric basis in a roll.

Support disc 125 mm for sanding paper universal.

BlackDecker MultiEvo X31447-XJ Sanding paper P1.

Sanding disc with Velcro 150 mm, P 180, 25 pcs. DeWal.

Sanding pad for DeWALT eccentric sanders.

Zubr Sanding disc “master” universal.

Abrasive sanding disc with hook-and-loop fastener 125mm. Р80, 10.

Sanding sandpaper for manual finishing K.

Sanding sanding pad with velcro, round, P 220.

Sanding fleece for DeWALT reciprocating grinders.

Sanding disc with Velcro 150 mm P180 6 holes 5.

Zubr grinding wheel “master” universal.

FIT sanding disc with Velcro, perforated 125 mm P240.

Velcro-faced abrasive sanding disc, round, P 100.

Zubr grinding wheel “master” universal.

Sanding pad for eccentric sanders DeWALT.

Sanding pad for manual work Kling.

Sanding disc with Velcro, 150 mm, P120, 5 pcs., with a screwdriver.

Abrasive paper grinding wheel “master.

Sanding pad Bosch Wood Sanding Sheet 2608605441

Velcro sanding disc 150 mm P120 6 holes 5.

Sanding pad on a roll Belgorod N16 (p80) roll 7.

Sanding pad for manual work Kling.

BlackDecker MultiEvo X31442-XJ Sanding paper P8.

Abrasive disc Klingspor 200mm (silicon carbide) for grinding wheels.

Zubr grinding wheel “master” 35563-125-100.

Sanding pad Metabo 624943000 5 pcs., 9.

Zubr grinding wheel “master” 35562-125-180.

Mirka abrasive disc 150mm for grinding with angle grinder.

Self-gripping grinding disc with Velcro 150 mm P80 6 holes 5 pcs.

Wheels PS 33 BK / PS 33 CK at the heart of which is a high-quality sanding paper, used for processing of paints, varnishes and putty. The PS 33 BK/CK is characterized by high performance and durability. Various sizes and types of holes allow the use of grinding circles on all types of eccentric sanders, and circles on the Velcro 225 mm diameter on the “giraffe” sanders with a long shaft for sanding walls and ceilings.

Order grinding wheels PS33k you can in company Abrasivkomplekt. To do this, send an application by e-mail or call us back on our contact numbers, St. Petersburg, Yekaterinburg.

For grinding of lacquered surface you can also use the grinding wheels PS73 BWK from the section self-gripping grinding wheels Klingspor.

What is the grit size of sandpaper to work with?

As you understand, for different processing of materials is used different grinding sandpaper. We are not talking about the form of release, but the size of the grain, the way it is applied. The type of abrasive and the method of application is of secondary importance. They have a greater impact on the longevity of the material. But as usual, better is more expensive. Here everyone chooses for themselves. But the size of the grit is better to select for specific tasks.

Sandpaper for sanding wood for painting: the choice of grit size

What kind of sandpaper to sand the wood

In order for the sandpaper not to clog, the grit should be applied at intervals. This is the open type of application. In this case, you do not have to “knock it out” or change it often. The type of substrate. paper or cloth. Paper is cheaper, cloth is more expensive. If there is a grinder, look in the recommendations to her. For manual processing, you can fix the piece on a special holder or nail it to a bar.

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How to choose the grit size of sandpaper for woodworking

Recommendations on grit selection are given in the table below. For primary treatment we use sandpaper P40 to P80. It is giving shape, removal of a thick layer. The same materials are used for removing lacquer and paint on wood. To prepare the wood for painting, you need P100 to P240. For sanding after the first coat of varnish, we take P360 or P400. And finishing to smoothness. polishing and varnishing proper. is already quite fine P500 and above. In general, polishing is a separate subject, and there must be a step by step sanding and applying paint or varnish. And with each time they take thinner and thinner grit. And finish polishing, in general, with soft polishing (felt) material.

What kind of emery is used for metal processing?

To process metal, you have to use harsher abrasives, and therefore more expensive. An ordinary corundum can do the job with aluminum and its alloys. They are also used for machining cast iron, bronze and ferrous steel. For brass you need at least zirconia, but better titanium or alloyed electrocorundum. And even better. ceramic

Also note that the method of application should be closed

For grinding and polishing metal needs another type of sandpaper, and the grain size should be selected according to the type of work

The principle of selection of grit size is the same: for roughing increased “roughness” of the coarse grain, the thinner the processing, the finer the abrasive. To remove rust and smooth out basic roughness, take the coarsest sandpaper. The thinner the layer, the smaller the grit size. So it all makes sense

But note that two or three grit sizes are available for each job. That doesn’t mean you have to use any of them

This means that to get good results it is necessary to process each size. Although, if appearance is not that important to you, then you can use one of the recommended sizes.

Sandpaper for plastic, stone, ceramic, and glass

For the type of abrasive and its application, the recommendations are the same: stronger, tighter. But sanding is recommended with water, so a water-resistant version of sandpaper is required.

Sandpaper for plastic: the choice of grit

For finishing finishing plastic and glass, sandpaper with even the smallest grit, the very null or P800, will be too coarse. It will leave visible scratches. Bring to the smoothness of these materials with GOI paste and even finer sanding compositions. But that’s a separate story and its own technology.

How to choose the right one

When choosing a sanding belt, it is important to pay attention to such criteria as the size characteristics of the product, the base and the abrasive material.

Belt size

Dimensional characteristics of the product are selected taking into account what model of grinder you plan to use it on. The recommended parameters of the belt are indicated on any tool. Proper selection of the length and width of the workpiece makes it possible to process the material in a quality way.

One of the easiest ways to measure is to use the existing belt, which is left on the grinder or other tools. Old, worn tape is cut across. The place of the cut must be flat. Then measure the length and width of the product. This way, it is not necessary to make a mistake when selecting a new abrasive belt.

Garnet sand is considered a high-strength abrasive that can be used on wooden workpieces

The basis of the sanding belt

The main part of abrasive tools are made on the basis of fabrics, which differ in composition and degree of hardness. Sanding belts are available for sale:

  • With stiff polyester backing. This type of abrasive can be used for rough sanding and hardwood materials.
  • With a flexible backing. This kind of product is suitable for finish sanding. An abrasive can be used on aluminum/metal and steel surfaces. In the course of work, the craftsman uses a manual belt sander or machine.
  • With polyester base. Used for flat processing of metal surfaces.

Tapes with a dense paper backing belong to the category of universal abrasives, which are used by employees of furniture factories and other companies of woodworking industry. The product is used for the intermediate and finishing treatment of the product, made on the basis of natural wood, as well as wood-fiber board, chipboard.

Thanks to special dust-repellent additives the abrasive prevents clogging and extends the service life.

Abrasive grit material

When buying sanding board, it is important to pay attention not only to the dimensional characteristics, but also to the material that is sprayed on the base. The manufacturer uses as a spraying agent:

  • aluminum oxide grit;
  • silicon carbide;
  • garnet sand, such a spraying is intended for sanding structures made of wood;
  • a ceramic abrasive suitable for craftsmen who machine wooden surfaces;
  • zirconate.
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Sanding belt with aluminum oxide for planing, scraping, roughing and finishing of all types of wood.

Silicon carbide is usually used for finishing, since it provides a stable and even cut. It is harder and sharper than aluminum oxide, so the cutting speed remains constant throughout the life of the belt. Silicon carbide is able to remove material without excessive heat generation. Stabilized wood can be machined with this belt.

Zirconate is one of the most aggressive and hardest abrasives. Zirconate ribbon is used for grinding and polishing of heavy metals, wood surfaces.

Tip! Do not move your hand from side to side when sanding. It is necessary to adhere to the forward-backward direction. It makes it possible to prevent slippage of the belt and almost completely eliminates the risk of damage to the abrasive and the sanding machine.

Time

The use of classic sandpaper, especially when sanding by hand, can take a long time before the end result is reached. The amount of work increases in proportion to the surface area to be treated. For this reason liquid sandpaper has another important advantage. the ability to save time.

This is what classic sandpaper looks like

Using this material helps to accelerate the process of removing the old coatings. It is enough to prepare the surface, clean it from dirt and dust, apply the solution, let it dry, clean it again and you can apply a new coating. The substrate prepared with the help of the composition will have increased adhesion.

Time is also saved when machining small parts or surfaces with complex geometry. To make a quality sanding in hard-to-reach places, using regular sandpaper, it is quite difficult. However, the liquid composition allows you to avoid these inconveniences and get a quality result.

Marking

Labeling of abrasive paper (click to enlarge)

The variety of sandpaper today is classified into two standards. Marking is made according to FEPA standard as well as ISO 6344.

Norms and the other correspond to Russian GOST, which, in turn, is recognized by the international community. In some countries, abrasive paper is marked and produced in a different way.

Traditionally, sandpaper is produced in the form of sheets, is called a sheet, rolls, and has the usual labeling. P” grit size designation. The figures following the letter indicate the limits of 12.2500.

Take note: the higher the number of grit, the finer the grit.

Gost of the Soviet Union indicated the value of the main indicator in microns. Since then, the classification, which is sometimes used in neighboring countries, former republics, and in the vaults of some thrifty owners. M20, M 7, “nullovka.

  • The coarsest, primary work with the surface is carried out with the use of sandpaper, which has a coarse fraction of abrasive:
  • Р22;
  • Р24;
  • 80-Н;
  • 63-Н;
  • 50-Н;
  • Subsequent machining is made with emery wheels:
  • Р40;
  • Р46;
  • Р60;
  • 40-Н;
  • 32-Н;
  • Initial sanding requires the use of paper:
  • Р80;
  • Р90;
  • Р100;
  • Р120;
  • 20-Н;
  • 16-Н;
  • 10-Н;
  • The final stage of sanding is made with sandpaper:
  • Р150;
  • Р180;
  • 8-Н;
  • 6-Н.

Stage-by-stage use of abrasive material allows you to carefully select all the existing flaws, level the surface, prepare it for finishing, which is also carried out in several stages.

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The classification of fine sandpaper implies the use of the tool for durable wood (oak, ash):

  • primary sanding:
  • Р240;
  • Р28;
  • 5-Н;
  • М-6;
  • polishing before applying stain, primer, paint:
  • Р400;
  • Р600;
  • Р800;
  • М40;
  • 2-Н.

Using a fine-grained sandpaper for metal, ceramic:

  • grinding:
  • Р1000;
  • М20;
  • 1-Н;
  • polishing:
  • Р1200;
  • Р1500;
  • М7;
  • М5;
  • Р2000;
  • P2500 H-0;
  • Н-01.

Letter “P” means classification according to ISO 6344, letters “H”, “M” correspond to our domestic marking. Numerical values indicate the size of the abrasive fraction.

For example, a P80 value tells you that the marking complies with an international standard, the abrasive has been run through 80-per-inch molds. It’s easy for a customer to understand what kind of work with this or that tool should be done. The right choice of sandpaper according to the purpose will help.

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