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for this assigment I decided to make something usefull for my final project and a that is a lower lid replacement with fake shaft for my servomotors. Designining the mold: I used Autodesk Inventor to design the mold.
 Photo: 3D model boolean subtraction Machining the mold: I used The roland modela and machinable wax to fabricate the mold. ... 
A short video of the process: The result: 
For casting I mixed Polyester Resin, "Cobalt" (Activator-1.5%), "Peroxid" (Catalyst-0.5%), Monostyrene (solvent-the necesary to get the correct viscosity) : 
In the picture above you can see that I needed a countermould, so I designed and printed it. 
Photo: countermould, 3D model-----> 3D printed Then put the countermould on the top: 
The final result: 
Files: Mediafire https://www.mediafire.com/folder/8hbn22l9hfgm5/mold_and_castingGithub https://github.com/lefolindo/molding |