5x5 Slide Puzzle

thingiverse

Here is a 9x9 Slide Puzzle, more numbers definitely make it better. As usual, my models are designed for commercial use. I respectfully request that if they're sold, you consider donating 10% of the profits to me. However, since there's no way for me to enforce this request, and if these puzzles are given away for free, a donation isn't necessary.