I just put the instructions and photos of how I prepare Masonite panels for painting. There are two parts to this process. The first produces a surface with thousands of tiny peaks and depressions; the second step takes this a little further and produces a velvety smooth surface with microscopic pits that is great for washes and scumbles. This all looks and sounds like a lot of surface preparation, but believe me; it’s great to paint on.
The canvas preparation steps will be coming in a week or two.