A simple hole drawing template with a few defined sizes: 6, 8, 10, 12, 14, 16, 18, 20mm.

The hole sizes are displayed on the template in raised text.

I shared two Bambu Slicer 3MF files. One to switch colours via a print pause and manually swap the filament colour. The second 3MF does colour swap via AMS.

My print is made with eSUN PLA+ 1.75mm white and red filaments, with 0.2mm layer height and 15% infill on a Bambu X1 Carbon printer. No supports required.

I hope you can find this print useful, too.