Split 1x2x3 (Improved)

I printed original NKCubed's design but could not assemble - it has too complex mechanism for a regular FDM printer. Fortunately I just finished designing my Split 1x3x4 and its mechanism is much easier to print. So I went that way.

All credits still go to NKCubed, consider this thing as just a polished version of his puzzle.

In this design I used 24mm blocks - I think the puzzle at this size looks and feels a little bit better. Though I am also uploading a 20mm version (at almost regular cube)

I added fillets to all edges, so all pieces do not catch each other on movements. 0.2mm tolerance works fine in my case.

One more note on the design. All pieces are bulging and can can't be printed as is without supports. First of all I do not like printing with supports, so I just split each piece into body and cap and then glued together. I printed my puzzle in ABS and used acethone as a glue. Moreover my printer swallows first few layers (smear it on the table), so I added 0.2mm height to each part. After gluing and sanding all pieces became exactly 24x24x24mm.

If you feel this approach is overcomplicated - you may use non-split version of puzzle pieces. See parts with 'As Is' in file name. Note, they are not properly rotated and not prepared for printing. Use you favorite slicer and printing approach.

Here is the design source
https://cad.onshape.com/documents/7b23e370cf1249246f965e12/v/a875d3816d5ce948b098ed4b/e/295683f9e788584fa48ca44b
Feel free to fork and adjust if needed. All main parameters are extracted to dedicated variables on at the top of feature list.

Feel free to ask me any questions regarding to this puzzle.