Jim Jakosh commented about 3 hours ago new Nice puzzle, Ducky...but they drive me nuts trying to figure them out!! I made one and I don't think I can get it apart now!!
JJ you use glue for the "parts of parts" not between parts.
Also helps to grow a third hand so you don't have to use glue to stop parts from falling out/apart when solving.
The beauty of buffing wood is that you don't add that extra layer... while the thickness of many finishes is only a thou', it makes a helluva difference when fitting puzzles/shop-made jigsaws. Also CA works well on pre-buffed stuff... layered finishes separate.
If your first cut is too short... Take the second cut from the longer end... LBD