No supports, ready-to-use.

6-piece burr puzzle with a difficulty index of 7680. Arguably the most difficult solid 6-piece burr puzzle.

The solution is included but I recommend solving it yourself! The six pieces assemble into a burr as shown in the photo.

This puzzle has 0.2mm sliding tolerances. If you want to change the size or tolerances, download the f3d file and open it in Fusion 360. In Fusion 360, top ribbon>Modify>Change Parameters and change the values to fit what you want!