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Puzzle Tube for gifting cash 3D Printer File Image 1
Puzzle Tube for gifting cash 3D Printer File Image 2
Puzzle Tube for gifting cash 3D Printer File Image 3
Puzzle Tube for gifting cash 3D Printer File Thumbnail 1
Puzzle Tube for gifting cash 3D Printer File Thumbnail 2
Puzzle Tube for gifting cash 3D Printer File Thumbnail 3

Puzzle Tube for gifting cash

N33 Designs avatarN33 Designs

November 21, 2025

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Description

UPDATE 12/12/2025
The Final Boss add-on has now been uploaded, please read the Final Boss section below before printing.

After the success of my Puzzle Tube V1 last Christmas I've been working on a new trickier version with 17 parts and more steps to unlock!
Fits all notes/bills up to 82mm in height which includes all USD / GBP / EUR / AUD / RMB

Boost MeDesigning and testing this model has taken a huge amount of time and effort involving hundreds of test parts and mechanisms using various filament types to ensure a consistent print. If you've enjoyed this model then a boost would be hugely appreciated to motivate me to develop the next version! Thanks!
Just some of the test parts and mechanisms printed during development of this model (and some from V1)

Printing
Print all parts in the orientation of my profile and absolutely no supports or brims will be required.

 

Assembly / setting the puzzle

A few things to note:

  • Don't overtighten the screw
  • The order of the combination lock rings is important. The correct order is letters, shapes, dots, roman numerals.

Note: there are a few minor differences in the model in the video compared to the final model version. e.g 3 pegs instead of 2 as per the thumbnail below. Assembly/solution remains unchanged.


Solution

Please watch the following video on how to solve the puzzle (Please note, the final boss is an add-on and is found in a separate print profile to the main puzzle) 

 

The Final Boss Add On

⚠️ PLEASE READ BEFORE PRINTING THE FINAL BOSS ADD ON ⚠️
The final boss is add on for the main Puzzle Tube, it is a completely sealed tube as one last twist in the Puzzle Tube.

 

It's recommended to print with transparent PLA/PETG filament so the recipient can see the money inside but can't quite get their hands on it yet, but could be printed in any filament if you prefer.

There is a small perforation at one end which should allow the top to be broken off to release the money.

 

PRINTING

There are 2 plates, one for PLA, one for PETG.

There is a pause at layer 381 which will allow you to insert the money before it gets sealed in.

⚠️ Obviously a 230c nozzle and paper or plastic money is not a good mix, so when inserting money please make sure it is pushed as far into the tube as possible so the nozzle will not touch it.

The walls of this part are very thin, so after printing is complete, let it cool completely before removing from the plate.

Bend the plate and/or use a scraper to release from the plate rather than just grabbing it - I broke one is testing by doing this.

 

⚠️ Maximum note height is approximately 75mm and should fit all USD, AUD and most GBP, EUR and RMB notes 

⚠️ £50, €50 and ¥100 notes will NOT fit. (But they will fit in the main puzzle if you don't use the final boss)

 

⛔ I TAKE NO RESPONSIBILITY FOR ANY DAMAGED MONEY AS RESULT OF PRINTING OR USING THIS MODEL ⛔

If you don't want to risk real money in the final boss you could add Monopoly money or leave a note inside with instructions to find the real gift

License:

Standard Digital File License

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