A Parameric Bomb Dice

Do you need a Parametric Bomb Dice? Of course you do. How else would you play the “The Unexploded Cow” and be able to do it with style if you don’t have a Bomb Dice?

Bomb Dice Lineup

Download the pdf button

I’ve been printing off a number of Print-and-Play board games for work and extended the printing to include 3D printing game pieces. One of the games was “The Unexploded cow” from Cheapass games. Ordinarily the game uses some 6-sided dice as the only extra item required, but I was keen to extend this to a bomb-shaped counter which players could use to track how the bombs discovered would be passed between the cows in play. I quickly designed up an bomb model. With the bomb counters in play I got to thinking about replacing the standard dice with some themed dice.

Bomb dice real

I was inspired by HelioxLab’sSteampunk Dice / Dé style Steampunk” open structure and juancroldan’sCoronadice” which used pointy bits to define the sides rather than using faces. To show off 3D printing I also wanted some internal structure and so conceived of the idea of using bomb shapes to act as the dice corner points and have their tails inside the dice. Because OpenSCAD does such an awesome job of pulling shapes together while allowing me to change fonts and dimensions, it was the natural choice for creating these dice.

Bomb dice in OpenScad

Here then is the resultant OpenSCAD code.


You will need a version of OpenSCAD later than 2015 to run this.

Alternatively, the same(ish) model was recreated using python-based CADQuery parametric scripting language: Parametric Bomb Dice using CADQuery

It is set up for parametric operation so there are a heap of controls you can play with to get the bomb dice you desire. Here’s a run down on what the various parameters are.

Bomb Dice Parameters - Bomb Details

Bomb Dice Parameters - Disc Face

Bomb Dice Parameters - Internal details

So that’s how to drive it.

Some of the code was shamelessly copied from the text_on_cube.scad example included with OpenSCAD.

A Variant

Screw dice Rendered

To try out other ideas, I produced another design which used screw models for the corner pieces. In this case the screw model was pre-built as an STL model and then imported into the model. Scale factors were then applied to adjust the model proportions to fit with the rest of the geometry. This means that if you want to substitute any other model for the corner pieces, it’s just a matter of replacing the filename in the lines containing the import statements and having your file in the same directory as the .scad file.


Screw dices

Also, have a look at the Bomb Dice realised with CADQuery, Parametric Bomb Dice using CADQuery


And, here’s where you can download the OpenSCAD file.


Creative Commons by-sa

This design by Hamish Trolove is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.