Coffin's Improved Burr Puzzle (level 2-3) by clockworkautomation 3d model
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Coffin's Improved Burr Puzzle (level 2-3) by clockworkautomation

Coffin's Improved Burr Puzzle (level 2-3) by clockworkautomation

by Thingiverse
Last crawled date: 3 years ago
Stewart T. Coffin's design no.36 "Coffin's Improved Burr (1979) is a level 2-3 puzzle meaning that the first piece is removed with two shifts, and three more shifts are required to release the next piece.
I have uploaded the individual pieces of which you need one of each or you can print the bed of all 6.
Update 10/08/19 - Small adjustment to allow for better slide action.

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