All five of the Platonic Solids made in wood.

I compound miter cut the ends so that they are glued tight with no fasteners. I then sand everything smooth and round any sharp corners.

Then I sign and seal every geometric with a matt Polyurethane finish so they're really durable for classroom hands on use.

https://www.deviantart.com/rndmodels/art/Full-Set-of-Five-All-Wood-Platonic-Solids-875562871