Taken from [https://www.thingiverse.com/thing:3913887](https://www.thingiverse.com/thing:3913887) and adapted to the small print profile of A1 Mini.

This makes the entire binary to decimal converter wallet sized and more flexible. I print these in two color filaments: a base color (grey/black/white) up to the layer where numbers begin, and then the rest in a secondary color of my choice.

From the original creator, wawaChief:

Print Settings

• Rafts:

  No

• Supports:

  No

• Resolution:

  0.2

• Infill:

  10%

• Notes:

  I printed it with 3 shells to have more rigidity and strength, especially for the hinges.

Post-Printing

When printing is done, gently free the hinges by wobbling a flat screwdriver or a knife like shown on the photo.rnIf the hinges are stuck, try printing with a 0.95-0.99 extrusion factor. I did not need that but depending on your printer and the width of your filament, it might help. Tolerances are quite low.