generated 49 faces dice

thingiverse

I never play lotto but a friend of mine challenged me to create a die with 49 faces. After several attempts I found a way to do it, but modeling this manually is tedious and I had to restart from scratch each time I made a change in the design. Then I decided to make a Blender script to generate it. This script allows you to generate a die with any number of faces. The faces can be engraved like the one I'm publishing here, but they can also be inlaid in the die. This later design requires a transparent filament so that the numbers are visible. EDIT 2016-09-25: I finally installed a diamond hotend on my Hephestos and printed it in bicolor black/white. See the video: https://www.youtube.com/watch?v=XpcJkaysb3Y Print Settings Printer Brand: RepRap Printer: Hephestos Prusa I3 Rafts: Doesn't Matter Supports: Doesn't Matter Resolution: 0.1mm Infill: 30% Notes: I publish files allowing two ways of printing the die: A one piece model: This model works but in my case, I had issues during the starting phase as the angles are very hard to print. You may also need supports. I provide the number rose as well for those who have 2 extruders. I didn't test this because I only have 1 extruder. A splitted model: In this case the die is split into two parts to be printed easily and glued together. This gives better results. The challenge The point is that it's impossible to make such a die with the shape of a classic die as their design requires an even number of faces in order to be fair. Taking apart some exceptions like a 4-sided die, in a classic die each flat surface is in front of another one on which is printed a number. You can't do this with an odd number of faces. New specifications Actually what we want is a number displayed on top of the die when a flat surface is at the bottom so stabilizes the die. We need 49 faces and 49 numbers on the opposite side. The trick is to print a number at the opposite side of every 49 faces even if it doesn't fit on a flat surface because we don't care if the number is flat or not, we just want it to be on top of the die. My script takes the specified number of flat faces (49 here) and spreads them equally on a sphere. Then it generates a number from 1 to 49 in front of those flat faces. Generalisation This design works for any number of faces, if you specify 6 this automatically generates a cube, if you specify 4 you obtain a tetrahedron like a classic game die. Actually classic game dices can be particular cases of this more generic design.