On the side peices, I lay them down on the router table and set it up to where the edgae of the dt is about 1/4" in from the edge of the board and about half the thickness of the drawer side materail. Then I use my sled and run them threw. Once the drawer is assembled with the bottom peice of ply the back is held in place and can not move. Yes I do glue it into place aslo.