Stage 1 - When the pieces are assembled correctly, it creates a stool.
Stage 2
Stage 3
Stage 4 - It is now complete! The blue center piece is the key that holds all the pieces together.
The undercuts won't allow the top pieces to pull away when the key is in place. The key also hold the two top pieces from seperating.
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Kids Puzzle Stool

A stool that your child can assemble. Made of pine wood.

Adam Groshong
Industrial Designer Edmonton, Canada