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 the .scad files. My best solution requires each piece to be moved at least once and a total of 26 moves.