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What we're going to do now is apply finish to this piece of plywood. This is a piece
of mahogany plywood. It's a very porous grain wood. Porous grain wood is not unlike the
one we do on the lathe. It is any kind of grain that is very open, like walnut, mahogany,
oak, ash, chestnut; things like that. There are very big pores in it, and when you apply
finish, the finish sinks down into the pores, and leaves a real grainy effect on the surface.
One way we're going to avoid that is to start the process by sanding this with real smooth
sandpaper, and cleaning the surface. We're going to put on here, 220 grit sandpaper.
Now we want to get the pores clean, so we're going to put a little air pressure on it,
and blow out the pores. Now we've got it real smooth and slick, and that's the basis we
want to start with any kind of a foundation of a finish. You want it to be nice and smooth,
sanded and clean, ready to go to start your finishing process, and that will be the next
procedure.