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I wanted to challenge my nephews and nieces for Christmas. While searching the Internet, I stumbled on Clickspring machined impossible dovetail puzzle on Youtube. It is an amazing job and I decided to design one myself. Taking it as an inspiration, I modified it a little and added some extras to make it more challenging.

You'll need a few things: (Check BOM list)

One 10mm steel ball (second one optional).
Two 4mm x 2mm (diam x height) round neodymium magnets
Glue
Optional: Pliers to insert the magnet

All parts print without supports and are exported with the right orientation to import directly to your favourite slicer. I used draft settings on my MK3S+ and Mini+.

IMPORTANT: in order to work correctly, it has to be a tight fit. So, you'll need a well tuned printer. It prints perfectly in my prusa printers but bear in mind that you may have to adjust some settings depending on your printer.

SPOILER ALERT! I don't want to publish here the secret to open it, if you want to know how it works, visit this link.

I asure you it's very funny watching friends and family go nuts trying to figure out how to open it ;)

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Impossible dovetail puzzle

Model files

impossible-dovetail-puzzle_stand.stl

impossible-dovetail-puzzle_stand.stl

impossible-dovetail-puzzle_upper.stl

impossible-dovetail-puzzle_upper.stl

impossible-dovetail-puzzle_lower.stl

impossible-dovetail-puzzle_lower.stl

Model origin

License