Bill Cutlers 305 Burr, modifiable

thingiverse

Here's another challenging puzzle from Bill Cutler that's definitely one of his easier ones. The images are taken from a small 5mm version. Keep in mind that Bill has put a lot of work into this, and we're lucky he hasn't patented it. If you want to show your appreciation, consider buying the nice wooden version: http://billcutlerpuzzles.com/stock/sixpiece.html The STL models have a tolerance of 0.3mm and come in two sizes: 5mm or 10mm per cube. You can also find the FreeCAD v0.17 construction file here, which includes two parameters in the spreadsheet that you can easily adjust to suit your needs.