The task is simple! Take the inner cylinder from the outer one!
You may take the object in your hand, but you are not allowed to turn or
shake it!
This is a small, not so difficult puzzle for children and adults!
Print settings:
Infill: 15% .
Support: No
Layer height: 0,2mm
Material: PETG,PLA
Size: 4,2 x 3,2 mm
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