About the dice
Choosing a die
Pick the type — D4, D6, D8, D10, D12 or D20 — and the size, measured flat to flat (the distance between two opposite faces). A typical D6 is about 16 mm, a D20 about 22 mm. The D4 has no opposite faces, so its size is the ball that just touches all four faces. Corner rounding shaves the corners with a sphere, which makes the die roll better and print cleaner; too much rounding leaves the flat faces too small for numbers, and a note tells you when that happens.
Numbers, words and symbols
Faces are numbered the standard way: on a D6, D8, D12 and D20 opposite faces add up to one more than the number of faces (7 on a D6, 21 on a D20), and the D10 runs 0–9 with opposite faces adding up to 9. The D10 can also be numbered 1–10, or in tens (00–90) for a percentile die. A D4 carries its numbers at the corners: three on each face, and you read the number that’s upright at the top.
Want your own faces? Type them in Custom labels, one per face — words of up to four characters, letters, initials, or symbols your chosen font has. The custom list takes the place of the numbers in the same order, so face “1” gets your first label. A decision die (“Yes, No, Maybe…”), a first-letter die and a chore die all work this way. A D6 can also show classic pips instead of numbers.
Underline 6 and 9 puts a small bar under those numbers so you can tell them apart when the die lands upside down.
Print settings
- Orientation: printed with the highest-numbered face down on the bed, so every other face prints upright. Use 0.08–0.12 mm layers and a 0.4 mm nozzle, with at least three perimeters. Small parts need time to cool: print a few at once, or lower the speed.
- Infill: 100% (or as high as your slicer allows) — the balance of a die depends on it being solid.
- Engraved vs. two-color: engraved numbers can be filled with paint or nail polish. Two-color inlay exports the die and its numbers as separate parts in the 3MF, printed flush, so each can be its own filament.
- Finishing: a light sanding of the corners and faces removes layer lines. If you want a clear finish, a thin coat of clear resin or lacquer helps.
FAQ
Are printed dice fair? Close, but never perfectly. Layer lines, infill and the tiny weight of the engraving shift the balance a little. For a casual game they’re fine; roll a new die a few dozen times and see whether any face comes up far more than the others before trusting it.
Why did my numbers come out thin or fuzzy? Numbers on a small face need a bold font and a fine layer height. The page warns you when the strokes would be thinner than a 0.4 mm nozzle prints reliably — pick a bolder font (Archivo Black is the boldest), make the die bigger, or raise the number size.
Can I use emoji or symbols? Only ones your chosen number font actually contains; anything it lacks is left out and a note names it. Plain letters and digits always work.
Why is one face flat-bottomed? Dice can’t print on a point, so the highest-numbered face is laid on the bed and the whole die is built upright from there. You can turn it any way you like once it’s printed.
How do I make a percentile pair? Print two D10s: one with normal numbering (0–9) and one set to “Tens (00 to 90)”.