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"Bolt Box", a Simple to Print But Hard to Solve 3D Puzzle

A 3D printed puzzle box.


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"Bolt Box" is a 3D printed dual nut version of a single nut puzzle box I'd seen at craft shows over the years. A friend (and follower) asked if I could recreate the dual nut version (which is currently commercially available as "Nut Case") for 3D printing, so here it is.

I designed this model in about thirty minutes using Autodesk Fusion 360, and 3D printed the four pieces in under an hour. However, assembly and subsequent solving of this puzzle may take hours!

I 3D printed this puzzle on my Ultimaker S5s using the Ultimaker Cura 4.6.1 "Engineering Profile" (which provides highly accurate tolerances) at .1mm layer height with 100% infill. After printing I used jewelers files and Micro Mesh sanding strips along with plenty of patience to remove the build plate "ooze" (sometimes referred to as "elephant foot") and thread sag from each piece. Depending on your slicer, printer, printer settings and the colors you chose, you may need more or less filing and sanding.

As usual I probably forgot a file or two or who knows what else, so if you have any questions, please do not hesitate to ask as I do make plenty of mistakes. And if you need any assistance in assembling this puzzle, just comment and I will do my best!

I hope you enjoy it, and best of luck in solving this puzzle!

Designed using Autodesk Fusion 360, sliced using an Ultimaker Cura 4.6.1 "Engineering Profile", and 3D printed in PLA on an Ultimaker S5.



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E10523585ab527f4155bb5c7b767a90c?default=blank&size=40DDDPeter added this to the Toys collection ago
C64c1622c82244af69fb42ca56471696?default=blank&size=40Justin Otherguy added this to the Goodies collection ago
B5b8bbc1da1fe612341548a4cd7697e5?default=blank&size=40adriatog added this to the To do collection ago
B775eb6fbb84f2079eaa22e8ac1248d8?default=blank&size=40Quentin Guernon added this to the Jeux collection ago
Mini 49Wichard Harskamp added this to the my choice collection ago
13f7dad49813e11031fe7e41f7344801?default=blank&size=40Dustybird added this to the Puzzle collection ago
27ecbdd7d52ae148b2b17e328cd46ca7?default=blank&size=40epax added this to the Fun Things to Print collection ago
Mini imageIzzy added this to the Of interest collection ago
C01ca6912146711af0721c41134a849a?default=blank&size=40mahan34 commented ago

this kind of puzzle is so funny that I have never seen.

6dd0b847e86d7dacd5ee4cb1b3b6b452?default=blank&size=40axelcor added this to the want to print collection ago
Mini bryan jacobs 3 11 2018Bryan Jacobs commented ago

After watching the video a couple of times, my slow brain figured it out.

Mini bryan jacobs 3 11 2018Bryan Jacobs printed this ago
Carousel thumb bryan jacobs nut   bolt
Printed on:
Creality Ender-3
I used AIO PLA filament at 205 nozzle and 60 bed temps. They came out perfect.
How do I assemble it? ? ? ?
Mini lora and iGreg Zumwalt published this design ago