This 3D puzzle forms an icosahedron when solved. It’s a definite challenge, as you’ve got to find five pieces which fit together before you can really start making much progress. It takes me about fifteen minutes to put it together.
Printing
The icosahedron.stl file contains all 20 pieces in their solved positions. To print, you will need to “Split to objects” and then arrange them with the correct faces down–they are NOT reversible. I’ve done this in icosahedron.3mf. On the Prusa Mini, you can print about 7 or 8 pieces at a time, so it will take three prints.
You may need to experiment to get the pieces to fit together well. Depending on your particular printer and filament, you may need to use XY Size Compensation (in the Expert settings on PrusaSlicer) to achieve a good fit between the pieces. Increasing the elephant foot compensation won’t hurt either, in order to make sure there’s no additional interference caused by elephant foot.
Begin by printing just two of the pieces. They should fit together without needing to apply much force. If they fit too tightly, decrease the XY Size Compensation. If they are too loose, increase the XY Size Compensation. With this particular puzzle, too loose of a fit can make it difficult to get the puzzle started, as it takes a minimum of 5 pieces before the puzzle will begin holding itself together.
The gcode and 3mf files were made using the following settings, which worked well for me:
Prusa Mini+
Prusament PLA
0.2 mm layer height
No supports
15% infill
XY Size Compensation = -0.05 mm
Elephant foot compensation = 0.3 mm
Credits:
ericman314
Download 3D models
| File | File size |
|---|---|
20-piece-3d-puzzle-model_files
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276 KB |
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20-piece-3d-puzzle-print_files
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3 MB |