Recently I designed Modular Crochet Board. It is designed to be snapped on same as puzzle. It is fully tested and working as expected as you can see on one of the photos.

Dimentions

• 10mm spasing from hole to hole
• single board is approximate 100x100x10mm
• holes are 8mm deep

Pring settings

• 0.16mm layer height
• 10% infill

Mechanical parts

• 3mm rods length you can choose by yourself I choose 70mm but 50mm would be enough