Chuck Twists - 6 piece burr puzzles with a twist
by ThePuzzleGeek, published
This Thing takes Edward Nelson's 1897 six piece Chuck Puzzle and applies a rotational twist to each pair of pieces turning what is a fairly simple puzzle into a more complicated one.
Where all three pairs of Puzzle pieces are rotated through 5 degrees the result is Stewart Coffin's Grizzly Burr puzzle.
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EIther download the OpenScad file, adjust the parameters to generate your own unique Chuck Twist puzzle. If you tweak the design it is possible to generate a puzzle that can neither be put together or taken apart so it is well worth rendering the assembled version to check the key piece is appropriately positioned/shaped You may need to play with tolerances a little current settings work for me when printing in PLA.
Alternatively download one of the pre-generated STL files (four puzzles in one thing!) : <ul> <li>Chuck Twist 14-14-14, all 3 pairs rotated through 14 degrees <li>Chuck Twist 14-10-6, 1st pair rotated by 14 degrees, 2nd by 10 and 3rd by 6 <li>Grizzly Burr, all three pairs rotated through 5 degrees <li>Chuck Twist 0 - no rotations applied, the simple original puzzle. </ul>
The ChuckTwist assembled STL file is just to show the final pieces in assembled position it is not intended for printing....