Introduction of sanding sponge-- how to use them correctly
Sanding sponges are sponge-like sanding tools used for sanding wood, drywall, and plastic. A sanding sponge is like sandpaper, but the abrasive material is attached directly to the flexible foam instead of a sheet of paper. Sand sponges, similarly, come in a variety of particle sizes; the smaller the particle size, the coarser the grit and the more material the sand sponge removes. While higher grit will give you a smoother finish but remove less material. It also comes in various sizes. Larger sponges can be used to smooth drywall or prepare furniture for paint, smaller sponges can handle detail work. Sanding sponge consists of three parts: Foam - usually made of EVA (Vinyl Acetate), Polyurethane or recycled polyurethane waste, Bond resin, and abrasive grain - made of Alumina or White Alumina to make. You can use them for wet or dry sanding. They are more durable than sandpaper and can be reused. A sanding sponge with channels built into the surface helps prevent the abrasive from becoming clogged with dust. They are effective on both flat and contoured surfaces, and the ductility of the sand sponge can be used for round grinding and curved surface sanding.
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