To attach the wedged drawer pulls, I use this setup to hold the pull against the drawer front while the wedge is driven from the inside of the drawer. The blue tape on the inside of the drawer makes for easy cleanup of glue squeeze out. After giving the glue a chance to cure, I cut the wedges off and clean up the cuts with a sharp chisel. I leave the ends of the tenons proud of the inside drawer face. Not too much, just enough to say "hey, look here, there's something kind of interesting here."