The Haberdasher’s puzzle is a simple 4 piece puzzle whose parts can be assembled into a square or an equilateral triangle. Solving the puzzle is easy, but for me the beauty is in the geometric dissection used to make the parts.
A long time ago I made one of these using a ruler and compass. Now I have a CNC, I was interested to see how well a CAD drawn and machine cut set could fit together.
There are many internet references for this puzzle, one I find useful is here.
This turned out to be a very quick 1 hour project:
- I used the second dissection described at the link above to create a CAD outline of the parts.
- Then I imported this into Cut 2D and traced the CNC paths from that outline.
- Finally, I cut the parts from 3mm MDF.
A little sanding and it was all done! The parts fit together really well and I can see making a few more of these as gifts using a nicely figured timber.