Qubits - build your own TIC prototype

Build your own TIC (Twisting Interlocking Cube) puzzle prototype with Qubits!

As a TIC puzzle designer and enthusiast I find it very hard to prototype a TIC puzzle due to the rotations. 

Burr tools can help with interlocking puzzles but without rotations, so you can get some ideas from there and then try to design a version with rotations, but will they work?

These qubits are reusable, so you don't have to waste a ton of plastic for failed models. You can also print them in different colours for each big puzzle piece.

There is also a tight version, a loose version and an even looser version of the qubit: use the looser version for rapid prototyping, where you have to iterate many times the shape of each piece. However, once you settle for a specific shape for a specific piece, use the loose or tight versions to make that piece almost solid (they sometimes need some encouragement with a hammer and they will stay connected very solidly). Be aware that the tight version is VERY tight and will probably need hammering (imagine it as gluing pieces together without needing glue). I recommend printing the loose or looser versions to begin with.

Qubits come in two shapes, the basic qubit (loose, looser or tight) and the end qubit (valid for loose, looser or tight versions). You will only ever need one single end qubit for each big puzzle piece, so if you have a 4x4x4 TIC that consists of 4 big pieces made up of qubits, you will need 60 basic qubits (loose, looser or tight) and 4 end qubits.

NOTE: I created the loose and tight versions because the first layer gets squished more than the rest (this always happens to improve adhesion) which makes connecting two qubits vertically (nubs in that first layer) less tight and prone to popping off. There are a number of ways to deal with that:

1. Just use loose or tight versions instead of looser (all 6 directions will make a tight and solid connection with two levels of tightness)
2. Use looser qubits but avoid connecting them from that direction if possible
3. If not possible, use one of the tighter versions of qubit for that connection (loose or tight) 

Please, share your feedback on the model and enjoy it!