The file 'D20 Gaming Dice Keycap 3D Printer Model' is (stl) file type, size is 291.9KB.
I took strocknar's d20 die and made it into a Cherry MX keycap.
There are two versions here. The original will likely be too large for keyboards with tight spacing so in that case you'll want to use the 19x19 or 20x20 version. The 19x19 version will likely fit better but is a bit thin to print and can easily become a mess.
This prints best at high resolution.
d20_keycap.stl | 425.1KB | |
d20_keycap_19x19.stl | 896.4KB | |
d20_keycap_20x20.stl | 855.7KB |