Found a cracked core print inside a casting from last Tuesday's pour

I was cutting the risers off a valve body we poured Tuesday and spotted a hairline crack running through the internal core print. Has anyone else had luck switching to a different sand binder to stop that from happening?

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2 Comments

jessec394mo ago

Have you tried a phenolic urethane binder? Those tend to hold up better against thermal shock, in my experience.

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michael_craig4mo ago

How long does that stuff hold up before it starts breaking down from the heat?

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