Lotsa posts on the subject here and Pi. Bob Brines also has good tips. To screw or not to screw. If you use white glue and take your time you can clamp w/o screws. Either way make certain the edges stand proud of the panels a hair. Easy to sand an edge. PITA to sand a whole panel down. Goe to the Joes site and use his hot iron glue. Other Bill tried it and likes it.