3x3 Slide Puzzle

This is a re-creation of the classic 3x3 slide puzzle, made available for commercial use. Tolerances are 1mm, I usually print it at 70% scale.

You are welcome to sell these, I usually charge $4 or $5 each at 70% scale. I request 10% of the sale price if sold in a commercial setting, though I have no mechanism to enforce this desire. No kickback needed if casually selling to friends/giving away to children.

If you get stuck, a hint: Sometimes you have to undo the correct stuff to get the new pieces into the right spot, similar to a Rubix cube.