![]() ![]() ![]() ![]() An orbital sander is more compact and much easier to control than a random-orbit sander, especially on vertical surfaces. Instead of a random-orbit sander, use a quarter-sheet orbital finishing sander fitted with 100-grit sandpaper. Dry the surface, then sand the riser smooth. To clean them, start by scrubbing each riser with a steel-wool pad dipped in paint thinner. If the rounded front edge of the tread, called the nosing, needs to be refinished, sand it down to bare wood using a sanding sponge or electric profile sander fitted with a 5/8-inch-radius convex pad.Ä«etween the horizontal treads are vertical risers, which don't get stepped on but do get beaten up. Vacuum the tread clean of all sanding dust, then sand the surface again, only this time with a slightly finer 100-grit disc. The sander produces plenty of fine dust, so be sure it has a dust-collection canister or is attached to a wet/dry vacuum. Start by using a random orbital sander and an 80-grit disc to sand the thread down to bare wood. If the varnish finish has worn off the tread, then you must refinish it. Thoroughly dry the tread with a white cotton cloth. Dip a 0000-grade steel-wool pad into the thinner and lightly scrub the tread clean of stains and scuff marks. Put on a pair of rubber gloves, then pour a capful of paint thinner (mineral spirits) onto the tread. If the stair-tread finish is intact with no bare wood showing, you can restore it to like-new condition with a good cleaning. Play icon The triangle icon that indicates to play ![]()
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