How to Prepare Wood for a Finish Part 2
The primary goal of sanding is to produce a surface that doesn’t show machine marks or sanding scratches after you apply a stain or finish. If the scratch pattern can be made even, you may achieve satisfactory results sanding only to #150 grit. Stationary sanding machines are best for doing this, though hand sanding will also work, especially if you aren’t applying a stain.