50% success
*experiment to see if a real walnut shell would burn out*
1. break walnut in half
2. give insides to someone else to eat
3. paint nail polish on shell
4. sprue halves
5. invest
6. put in an 8hr burn out
7. cast in bronze
look at the detail of the inside of the nut!!
top of the metal nut
1 of the shell halves cast, the other did not. The investment must have collapsed in itself... i found out when the metal did not flow into the flask.
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