Yorecraft 1/4" Coarse, Pinless Scroll Saw File An inexpensive accessory that converts most scroll saws into power sanders. A silicon carbide abrasive baked onto a tempered spring steel, (not sandpaper on plastic.) Shape and sand complex contours and forms easily eliminating the need for tedious hand sanding. The silicon carbide abrasive is aggressive enough to cut as well as sand in most materials.