Shrink Rate

[REDesigner09]

Hi,

I'm curious to know how some calculate shrink rates for wax molds or dies.

Thanks

 

[patprimmer]

I normally measure the mould then measure the part.

If I need to predict shrinkage I try to find an existing example that is similar in composition and design paramerers that influence the shrinkage.

Regards
Pat
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[REDesigner09]

Hi Patprimmer,

Thanks for the feedback. Would you happen to have an example?

 

[patprimmer]

Not with me.

The only wax moulding I have seen is for jewelry and shrinkage really does not matter there. My real shrinkage prediction experience is with thermoplastics. Well I suppose wax is just a real low MW PE, but I would hesitate to use PE as an example.

Regards
Pat
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