Re: Circles in Plastic Castings

Richard Brennan

At 09:43 AM 8/7/2016, chris_hillman@... [STMFC] wrote:
Just a question here. Nothing we can do about it except fill them in but, why are there small circular holes or impressions in various plastic castings? They can't be for material-flow in the casting process ???
Ejector pins...
without them... it would be extremely difficult to get the warm injected part out of a complex mold.

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Richard Brennan - San Leandro CA

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