Wednesday, September 24, 2008

Casting a zinc belt buckle.

UPDATE: I have improved this technique and a much better example is on this post:
Make your own fish trilobite or turtle belt buckle.

This is the shape of the Twin Cities with the neck of the dinosaur approximating the path of the Mississippi.
diy brontosaurus belt buckle

I used:
a small porcelain dish like a evaporation dish or crucible to heat the zinc
UPDATE: This is much easier with a small can like one that veggies come in. Plus it is esentially free instead of $5.
a source of scrap zinc
a candle
an item you would like to cast
a place to have a fire
a coat hanger
Sandpaper or a Dremel tool.

To start I pushed the dino into the clay creating a negative. Then fill the hole with wax. This wax will be a positive of the eventual cast.

Next I placed the wax in the bottom of a milk carton and pour plaster over it.

Once the plaster was set I melted the wax out of the plaster by holding in over the fire.

Now the fun begins.
dish with the zinc and waiting for it to melt.
then I pour into the plaster cast

I Bent the coat hanger to attach to the belt as shown below.

diy brontosaurus belt buckle

diy brontosaurus belt buckle

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