Step 1 - Make an 8"ish square 3/4" thick board (I used white pine).
Step 2 - Tape down and drill mounting holes.
Step 3 - Mount new waste board and cut out pocket with extra room for block wedges.
Step 4 - Tape down a small piece of stock and cut out 2 wedges
Step 5 - Mount your work piece in the pocket with the wedges all snug. Here I mounted a piece of red oak to start making some disc golf bag tags.
The same wedges can be used with different waste boards with different sized pockets.