How is there not a cool ninja emoji!? There is now! I made this to hang from my rear view mirror, but feel free to hang it up wherever you want.
- Size: 65mm diameter. Mounting tab with 2mm radius semicircular hole. Max. thickness 4mm (single sided) / 6mm (double-sided).
For reference, the one in the pictures is double-sided and was printed out of PLA at 100% scale.
I found printing the double-sided faces in two halves easiest: place two instances of the model on the bed, one flipped, and then drop them into the bed in Cura (or other software), by half of the thickness. I superglued the halves together after painting the faces, then painted the edge after the glue had dried.