Thingiverse

Hinged Triangle-Square

door mathgrrl

438 Downloads

425 Likes

11 Makes

This object prints in *one piece* without raft or support, fully assembled, hinges and all! The resulting model will hinge from a square to a triangle and back again.

The model is based on Dudeney's famous hinged dissection known as the "Haberdasher's Puzzle". For more information, see [MakerHome, Day 188](http://makerhome.blogspot.com/2014/03/day-188-hinged-triangle-square.html).

Video: https://www.youtube.com/watch?v=Qh-POJJO5ws

Be sure to print with no raft and no support or the model will not work correctly. After printing you need to give the hinges a little "snap" to get them started.

This model is optimized for printing on a Replicator 2 with .3mm/low resolution. If you have problems printing on a different machine then tell me details in the comments and I will post some tighter/looser variants that might work better.

**UPDATE: New post about this model, new versions for 3D printing on different printers, and new mathematical advances, at Hacktastic: [Hing

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