Introduction: 3x5x5 "Rubik's" "Cube"

The 3x5x5 cuboid puzzle is a kind of twisty puzzle where there are three layers of 5x5 cubies. It is essentially a 5x5x5 Rubik’s Cube, but with the top and bottom layers removed. It has interesting properties, such as shapeshifting, which is as crazy as it sounds! This puzzle is rare to find, since no company currently mass produces it. Meaning, the only way people can get one of these puzzles normally is to 3D print one. That’s exactly what we’re going to do today in this Instructable!


To make this puzzle, you need the following materials:

  • PLA
  • Sandpaper (preferably low grit)
  • 6 screws (of screw diameter 4 mm)
  • Sticker Vinyl
  • Spray Paint (optional)

The following tools are also needed:

  • 3D printer
  • Screwdriver
  • Cutter for the stickers
  • Ultimaker Cura or any other slicing software for 3D printing

Step 1: 3D Printing the Pieces

Just like a jigsaw puzzle, you can’t have a twisty puzzle without the puzzle pieces :D

Download all of the .stl files attached in the Google Drive link below. The quantity for each piece to be printed is specified in the file name. As much as possible, try to minimize the amount of support material used, which will be shown later.


To start printing the pieces, you first need to know how to orient the pieces properly and the correct support structures.

Some pieces require supports, while others would be better off without any or with support blockers in certain areas. There is a recommended printing orientation and support locations for each unique piece, which are listed below. The grey cubes are the support blockers, which can be placed by selecting on the piece, then pressing the “E” key and left-clicking on the desired area of the piece. This support blocker can also be resized and moved.


Step 7: The Finished Puzzle

Adjust the tension of the screws to your liking... and there you have it, the finished puzzle! Good luck solving it!