Double Dovetail Puzzle with a twist
by damienb, published
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The double dovetail puzzle is a classical brain teaser that defy intuition at first... How the 2 pieces where assembled with these two dovetails? I've added a twist inside to raise the disassembly difficulty.
You can see the puzzle in action in this video:
This is my first brain teaser (and most complex assembly so far). You need 2 marbles (1/2inches diameter, STL provided) for the internal mechanism. I've added a 1mm clearance in the marble slots and the dovetails.
I finaly printed this one in PLA, 2 shells 20% infill, and got my first experience with warping on a non-heated bed... Only the external faces were warped, and the dovetail part was pretty flat, so I just had to do a little bit of sanding to make it slide nicely!
When doing the right actions there is a maximum of 4 steps to open the puzzle, but there are traps and dead-ends that will play tricks with anyone who's tempting to solve it. It's not an difficult puzzle probably 3/5 but should be challenging enough. You can check the solution here: http://wp.me/p3gI7M-2M at the end of the post.
To assemble the puzzle:
1/ push the 2 marbles in the holes (1 per piece)
2/ hold each marble/piece between the thumb and forefinger
3/ completly slide the the pieces starting with the corners with the arrows
4/ try to disassemble it!
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Double Dovetail Puzzle with a twist by damienb is licensed under the Creative Commons - Attribution license.
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