Bob's Lock - a sliding block puzzle

Bob's Lock is a sliding block puzzle. https://www.youtube.com/watch?v=zcj0DvfM3LU Manipulate the pieces and one piece can be removed from the exit. Print puzzle-top.stl puzzle-bottom.stl puzzle-pieces-plate-1.stl puzzle-pieces-plate-2.stl The pieces fit together closely, so file down all burrs. Assemble according to layout.jpg as shown here https://www.youtube.com/watch?v=m588oZtYT-k Do not over tighten screws. If the pieces are still too tight you can change the "clearance" parameter in t