# First contact is always begin of story. ## class12: casting and molding

Background

Thame “First contact”

Contact 1 subumarino submarino is one traditional style of hot chocolate drink in south America(Argentina and Uruguay). If you order it cafe serve hot milk with a peace of chocolate , shaped like submarine.then you take chocolate into hot milk and stirred with spoon. I knew it from japanese novel. My firiend said that she hope to try it in its habitat. Therefore 5 years ago we visited south America. Contact 2 Notiras My first contact to Fab lab was FAB9 in YOKOHAMA. In the conference Dr. nile and Dr. Peek presented about Fab Lab. In presentation picuture by Dr. peek, I found battle ship ”Notiras”. ”Notiras” is a fictitious ship that appear in japanese Animation “Nadia The Secret of Blue Water”. It my favorite Animation from childhood. With that as start, I start to stady digital Fabrication.

1.modeling I tried to make notiras ship’s modeling. but its wings are too thin to be cast.So I shaped only main frame of ship, so after casting I would joint wings to main frame by chocolate welding.

I made 3D model of frame by fusion360. AT first I drow rough shape referred to 2D Animation.
When casting bottom face should be flat. So I tilted design in a Z axis direction. 2.thin and small parts be strengthen.

2.Machining I used Roland MDX-40. In this assignment I use Roland original software ‘MODELA player’ to covert 3D date to milling code. I esed chemical wood for material of molding. I heard it fix to make more shape molding than modeling wax. I would set like this
Trouble An art object has been connected to the frames. I was able to just revise it, but intended, on the contrary, to use this. I break the part of the embankment earlier and I open a gap and take out chocolate. I had gaps and became easy to remove it.
3. curing finaly molding I used “PROSILICONE PLATINUM HTV-4000” sold by ENGRAVING JAPAN prepare 2 silicone liquid in paper cup, A and B, using mass scale. In this case, mix ratio is 1:1.

Trouble

Lump is bad in progress for ten hours. Temperature thought it to be low (about 12-15℃) So I put it near a hot water heater and put it more for five hours. finally curing is completed

4.Casting At first I made the part of the embankment by chocolate with 30% cacao Then I pour hot chocolate with 70% cacao into finaly molding. Curing finished for 15 minutes in ice chamber.

5.welding There be it and ties the chocolate which dissolved the feather which I cut and brought down in a burner to the cutter which I heated to the main body. welding chocolate uses a 70% cacao same as the main body.
I attach the cover which imitated red Noah to hot milk and let you question on “Submarino de notiras”. I with a spoon and am completed! Delicious! Cool.

Molding date Notiras