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The Norton MultiSand Small Area abrasive sponge flexes to sand contours and small areas by hand. Four sides of the sponge are coated with aluminum oxide grit, which is one of the most common choices for general purpose grinding of wood, metal, plastic, and fiberglass, and is more durable than silicon carbide grit. The tear-resistant foam sponge retains grit up to five times longer than standard sandpaper. After sanding, the sponge surface rinses free of dust and chips and is ready for reuse.
|Fine/extra fine grit||For light sanding between stain, primer, and sealer or for a smooth finish|
|Fine||For fine sanding a surface in preparation for priming, staining, or sealing|
|Medium||For light sanding of surfaces or moderate removal of rust or coatings|
Coated abrasives have individual abrasive grains spaced at a predetermined distance from one another. They are used for a variety of applications — from shaping a part to fine finishing, depending on grit size. Low grit numbers such as 40 are coarse and are used for removing excess material and shaping a part. High grit numbers such as 400 are rated as fine and help create a smooth surface finish. Closed coat abrasives are 100 percent covered with abrasive grains, which extends the abrasive's life, maximizes material removal, and achieves finer finishes on metals and hard materials than an open coat. Closed coats are only recommended for use with non-clogging materials. For open coat abrasives, 50 to 75 percent of the surface is evenly covered, which provides a rougher finish because the abrasive grains are spaced farther apart than on a fully coated product. The gritless spaces promote flexibility and resist clogging when abrading difficult-to-sand materials. The flexibility or rigidity of the abrasive product is also affected by the choice of backing material (either paper, cloth, or fiber). Paper backing, the most flexible backing option, contours to the workpiece and delivers a more consistent finish than fiber or cloth backings. Paper backings are categorized by weight from lightest to heaviest (A- to F-weight respectively). Cloth backings are slightly more rigid, durable, and tear resistant than paper backing, but can still withstand repeated flexing. Cloth backing is categorized by weight from lightest to heaviest (J-, X-, Y-, and H-weight respectively). Fiber backing is the strongest and most rigid backing option, and is recommended for aggressive material removal.
Norton Abrasives manufactures sanding, grinding, and polishing abrasives. The company, founded in 1885, meets International Organization for Standardization (ISO) standards 9000 and 14001 for quality and environmental management.
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