Sandpaper and its varieties

Sandpaper is also referred to as a sandpaper. This abrasive, different granularity material is on a fabric or paper basis, on which a layer of a special abrasive powder is applied . Sandpaper is used both in "manual" mode, and in the machine, for processing (cleaning) of all kinds of surfaces, which are subsequently ground, polished, painted, varnished, etc. Using nazhdachki can also remove the old paint, rust. Most often, these polishing pens are produced by rolls, but there are also more modern options, for example, an emery sponge. For stripping large enough areas it is good to have a special cork bar, to which the emery is attached. If you need to clean the metal, then you can not do without a drill, which will serve as a drive for a rotating disc grinding wheel and abrasive brush to.

If you need sandpaper for some purpose, the classification of it will help you choose the one that suits you best. So, classify the emery by the type of substrate. Paper-based skins can be either conventional or waterproof. In addition, this material can withstand considerable mechanical stress. The price is not high, but it is not very durable and is quickly erased. Sandpaper based on fabric (polyester or cotton) is more durable, elastic and resistant to moisture. Also there are grinders on a combined basis, obtained by the method of gluing tissue and paper. Particularly hard materials are processed on special abrasive machines, abrasive discs based on fiber.

However, it is not enough to know the classification, it should also be acquired with Granularity. It is the most important characteristic of this material. The grinders are coarser, the less is the grain size. Indicators of the coarsest sandpaper are from 12 to 16. With its help, usually remove from the surface of old paint, lacquer, clean off the linseed oil.

After it comes a less rough emery, the index of the granularity of which ranges from 24 to 40. She also can clean off the paint. But the abrasive skin of 60-80 is used after the surface is cleaned. Such nazhdachkoy carry out a rough grinding. To smooth and level the surface, sandpaper with a grain size of 80-150 is used. Also, it removes the remaining defects after rough grinding, unevenness.

Grinders for finer jobs have a grain size from 150 to 320. They process the surface at the final stage, immediately before the primer and after it, before painting. After grinding with such fine-grained emery, the wooden surface becomes perfectly smooth. Perhaps, it does not even need to be painted, but it is easy enough to open it with varnish.

However, there is a super-thin emery. Its value ranges from 360 to 4000. This sandpaper is nulevka, the most "tender", and is used most often in order to polish the already painted surface. Using this skin, you can eliminate the unnecessary glossy gloss of paint, smooth out the smallest scratches, remove unwanted stains.