Group Assignment:
- Review the safety data sheets for each of your molding and casting materials, then make and compare test casts with each of them.
Individual Assignment:
- Design a 3D mould around the stock and tooling that you'll be using, machine it, and use it to cast parts from it.
For the individual assignment I will take the model I would use for keeping all my electronics in my final project's system. The idea of the model is to be a cylindrical module that can be fit one in each other. Every module should work independently and store an specific sensor module (wind gauge, rain gauge, moist, etc). For further stages I will use a screw joint divided in 4 parts, but for this assignment I will simply replace it with 4 guide joints. The ideal material to make the piece should be obtained by melting recycled plastic shavings. Using the Precious plastic platform and the crashing machine in FabLab Barcelona. But previously, I will make a test with a liquid resine to check the dimensions and joints of the model. The system is explained on the following sketch:
First I am using Fusion360 to make the model of the casting. Here there are some general and section views of the model:
On the next image, there is a partial view of the casting model inside the mold.
Finally I am saving the casting model in .stl format:
Then I will use TinkerCAD to create the mold: