another ting about stack cutting. when doing fretwork you need to stack at least 2 pieces of plywood the bottom one is a throwaway because plywood chips.Oh the train the bottom piece was full of chips, but I can mount it so they =won't show. in some cases you can't do that so when stacking 3 pcs. you end up with 2 good ones. or maybe the top one chips and sometimes they do.So always stack and save the other pieces you may sell them sometime.