1) Plastic part or model master
3) Molding Box
4) Raw aluminum or other metal
5) Kiln or furnace to heat the metal (We used Techshop RD's)
6) Cold water to cool off the metal afterwards
7) Baking oven (you can use your oven at home or any oven that heats up to an even 400 degrees)
9) Protective metal gear: gloves, helment, and apron
Now, you're ready to make a real cast from plastic in a few short hours without breaking the bank. We cover simple medallions, complex 3D prints like this owl, and compound machine parts. Hopefully this will allow you to do 3D casts of anything you can dream up at home or your local hackerspace/techshop.
Step 1: 3D Print Your Plastic Model
Again, for your print use PLA, not ABS, as you want something that melts cleanly and is non-toxic. If you have any specific questions, Luis Freeman (owner of Plastibots) who runs our local 3D printer meet-up group every two weeks here is very knowledgeable. These are a few pictures from our March Workshop Event on How-To-Make-3D-Printers from scratch. Lots of fun all around.
So print in hand, what do you do next?