12.Molding and Casting
This week's assignment
- -Design a 3D mold, machine it, and cast parts from it
- Software:
- -Fusion360
- -Modela Player
- -Roland Vpanel
- Hardware:
- Roland SRM-20
- Electoric Scale
- Utility knife
- Files
- Materials:
- Modelling Wax File-A-Wax Standard Shapes Blue
- Sillicone
- Resin
- Sugru(Used this to srop leaking)
- Plastic Cup
- Stir stick
- News paper
- wire
- Disposal gloves
- Dye for resin
- References:
- - "Molding and Casting" text
- Procedures:
In Japan, there is "Children's day" on May 5th and we put "Carp streamer" for childern's healthy growth. So I tried to make portable carp streamer which are able to put everywhere.
Procedures:
3D modelling
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When modelling fish, I made mistake. Using fusion360's sculpture each line need to be beautiful and tidy. Otherwise error will be occur.
Milling modelling wax
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This time I use "ferris modelling wax", milled by Rolland SRM-20. The material was soft enough and surface looks smooth and beautiful.
Making Mold
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Next step was make sillicone mold. I mixed up material A and B and mixed carefully. It lokked like blueberry yogurt and pour into modelling wax mold. Finnally I dropped the mold saveral times, so that inside small bubbles came up to the surface.
Casting
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I found I made a mistake in milling wax process. To save the material, I put the original fish to too small space, then endmill couldn't mill narrow point well. Thus there was small hole on the sillicone mold and resin was leaked out. To stoped leaking I used curing tape but didn't work. Finally I used "Sugru" and could stop leaking.
Finishing
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