Sand Paper Price Full Details – South Africa Insider

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Overview

Sandpaper and glasspaper are two names for a form of coated abrasive made out of sheets of paper or cloth with abrasive substance attached to one face.

There are numerous different types of sandpaper, each with its own paper or backing, grit substance, grit size, and bond.

Sand and glass have been replaced in the modern fabrication of these products by other abrasives such as aluminum oxide or silicon carbide. When characterizing the paper, it is typical to mention the name of the abrasive, such as “aluminium oxide paper” or “silicon carbide paper.”

Sandpaper is available in a variety of grit sizes and is used to remove material from surfaces, either to smoothen them (as in painting and wood finishing), to remove a layer of material (such as old paint), or to roughen the surface (for example, as a preparation for gluing). Sandpaper grit size is typically expressed as a number that is inversely proportional to particle size. A small number, such as 20 or 40, denotes coarse grit, whereas a large number, such as 1500, denotes fine grit.

Backing Of A Sandpaper

Sandpaper backing options include cloth (cotton, polyester, rayon), PET film, “fibre,” and rubber, in addition to paper. For sandpaper discs and belts, cloth is utilized as the backing, whereas mylar is used for exceedingly fine grits. Fibre, often known as vulcanized fibre, is a strong backing material made up of multiple layers of polymer-impregnated paper.

A letter is frequently used to indicate the weight of the backing. Weight ratings for paper backings range from “A” to “F,” with A being the lightest and F being the heaviest. For fabric backings, letter nomenclature differs, with the weight of the backing rating J, X, Y, T, and M, from lightest to heaviest.

Sandpaper with a flexible backing can follow uneven shapes of a workpiece; sandpaper with a somewhat inflexible backing is best for normal rounded or flat surfaces. Sandpaper backings can be bonded to the paper or formed into a distinct support structure for moving sandpaper, as in sanding belts and discs. Stronger paper or backing makes sanding wood easier. The faster the sanding, the faster the wear of the paper, and the harsher the sanded surface, the tougher the backing material.

Types of Sandpaper

Glass paper, also known as flint paper, is lightweight, typically a pale yellow color. Glass paper disintegrates easily and is rarely used for woodworking.

Garnet paper is usually a brownish-red color, which is commonly used in woodworking. It will not sand wood as quickly as other sandpapers but leaves a better finish. Garnet is an excellent choice for finish sanding.

Aluminum oxide is another common type of sandpaper for woodworking projects. It is the type of paper most often used in power sanders. Aluminum oxide is more durable than garnet paper but doesn’t leave as nice of a finish.

Silicon Carbide paper is typically a dark gray or even black. This type of paper is used primarily for finishing metals or for “wet-sanding”, using water as a lubricant. While some advanced finishes use Silicon Carbide paper, it is not typically used in woodworking.

Ceramic sandpaper is constructed of some of the most durable abrasives available and can quickly remove large amounts of material. Ceramic paper is commonly used for belt sander belts, but it is also used for hand shaping wood. Ceramic sandpaper typically leaves an extremely harsh surface, therefore use caution when using it, especially on plywood and veneers, where it can quickly sand through the finish layer and damage a piece.