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Author Topic: My first castings in Aluminum 356 - Progressing into Iron  (Read 2012 times)

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Re: My first castings in Aluminum 356
« on: November 03, 2020, 11:04:36 pm »
The top of the flywheel casting had some sand inclusions, where the sand mold broke off and fell into the molten metal, and this defect leaves a hole in the casting.
The bottom of the flywheel was destroyed when the residual alcohol burned and gassed as the hot metal ran into the mold.

Lesson #1 learned:  No alcohol/graphite spray on petrobond.
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