Split 1x3x4 (Polished)

thingiverse

I wasn't thrilled with RyanPuzzle's design because it had some major flaws:\r\n- It was too loose due to huge tolerances.\r\n- The sharp corners made it catch easily.\r\n- The pieces were a mix of two different things at different scales, making it unclear how to print them correctly.\r\n- The screw mechanism wasn't well-designed. All credits still go to RyanPuzzle; this is just a polished version of his puzzle. I used 20mm blocks instead of the original 19mm - easier measurement that way. I added fillets to all edges so pieces wouldn't catch each other during movements. A 0.2mm tolerance worked perfectly for me. One note on design: all pieces are bulging and can't be printed as-is without supports. I don't like printing with supports, so I split each piece into body and cap and glued them together. I used ABS for the print and acetone as a glue. My printer swallows the first few layers, so I added 0.2mm height to each part. After gluing and sanding, all pieces were exactly 20x20x20mm. If you think this approach is overcomplicated, you can use the non-split version of puzzle pieces. See parts with 'As Is' in file name - they're not properly rotated or prepared for printing. Use your favorite slicer and printing method. Here's the design source: https://cad.onshape.com/documents/93b131d120f9af7d02b9e46a/v/a7214498a2ca6e0f408f1f03/e/544aa32c5e8e7b70ff0e0f93. Feel free to fork and adjust as needed - all main parameters are extracted to dedicated variables at the top of the feature list. Feel free to ask me any questions about this puzzle.