MYERSON FlexPress - Page 15

4. Wax up the framework.
5. Coat the inside of the ask with a petroleum jelly. This will
prevent the stone from adhering to the ask.
6. Invest the framework using regular Buff stone. When stone
sets, place sprues using 3/16” (4.75mm) utility wax.
Extend the sprue to the injection port in the ask.
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