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13. Molding and Casting

Hi! This week is divided in to the following:

  1. Group work on reading the Data Sheet of the Silicone and resin
  2. Designing the 3D file
  3. Milling the Wax mother mold
  4. Casting silicone to make the mold
  5. Pouring Epoxy Resin into the silicone mold

Designing the 3D file:

For this week’s assignment, I wanted to make a dice- specifically a 20-sided dice used to play Dungeons and Dragons and other similar TTRPGs (commonly known as a D20)

So I began working on fusion to the shape of the 20-sided geometry. A 20 sided polygon is usually called an ‘Icasohedron’. I made use of this tutorial to make the dice:
Design an Icosahedron the Easy Way in Fusion 360 with 3D Sketch

My CAD:

Post this, I split the body into half along a central intersecting plane. This way I could make a two-part mold.

Next up, I saved the body as an STL and took it to the SRM-20 machine. Here, we use the SRP Player software to send the STL file to the machine.