Lesson 9

Assignment - design a 3D mold, machine it, and cast parts from it.
• I have designed a 3D mold for a chocolate cast. First, I have created an Illustrator document with all of the shapes I wanted to be on the cast.
• Then, I exported the file to DXF format and opened it in Rhino3D.
• After that, I turned the shapes into surface (so that 123D Design will be able to read it) and exported the file to STEP for opening in 123D Design.
• Then, I opened the file in 123D Design and extruded it.
• After that, I made a shell using the "Shell" option in the "Modify" menu.
• Then, I have exported the file to STL and sent it to Ohad for 3D printing (it was late at night after the lab was close).
• Images:
• The positive plastic mold(s) (before silicon):
  
• Casting the silicon into the positive mold (the biggest one):
  
• The silicon (after molding):
  
• Taking out the silicon:
  
• Casting the chocolate into the silicon mold:
  
• The casted chocolate inside the mold:
  
• Taking out the chocolate:
  
• The casted chocolate outside the mold:
  
• I also made ice cubes from the mold:
  
• Download the mold files (.STL for a 3D printer) here
• Post processing of the 3D printed surface needed for smoother surface