Planed Finish VS Sandpaper - Microscopic View

[Stewie Simpson]

If the wood surface is prepped to a burnished surface, it can adversely effect the seal coats ability to adhere correctly to the wood surface. The effectiveness of the seal coat has a direct impact on any other subsequent coats applied. No higher than 220 grit sanding is generally recommended prior to the seal coat. The burnishing effect that can be worked by a finely set smoothing plane has already been covered within previous posts. If your applying a penetrating oil finish, or wax finish, the above mentioned recommendations may not apply.