The Answer.

Also, just having fun trying out a some 3D CAD and printing ideas. More versions on the way.

Amaze your friends! : Double Reverse Twist Puzzle

OnShape 3D CAD files :

https://cad.onshape.com/documents/af42b438f2b265a9a379e2f6/w/22a256a79fa182a723de31ae/e/cf6c89606b1a813e230abf0e

Print instructions

Print in PLA using the 3mf files provided. The 3mf file for the numbers prints both numbers.

Use contrasting colors for the "box" and the numbers.