Altekruse (old cross) Burr by clockworkautomation

Last crawled date: 4 years, 7 months ago

This puzzle has several unusual features; All twelve pieces are identical. The mechanical action of the solution is quite unlike any of the other common burrs. There are three different solutions, depending on whether this action can occur along one two, or all three axes.
Print 12 of the same piece to complete the puzzle.