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Injection Molded Part-Cost of tight tolerances
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Posted by: ODONNELL ®

02/25/2004, 10:15:47

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For injection molded parts, is there a rule of thumb or factor for the Cost vs. #of decimal places in your tolerance?
Thanks






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Re: Injection Molded Part-Cost of tight tolerances
Re: Injection Molded Part-Cost of tight tolerances -- ODONNELL Post Reply Top of thread Forum
Posted by: insideman ®

02/28/2004, 03:59:22

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That depends.... On a lot of factors. Are you using a material that behaves well in the mold? Is the part design right? Is the process rigorously controlled?

How tight is tight in your mind? Plis/minus .001 inch is fairly routine.







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Re: Injection Molded Part-Cost of tight tolerances
Re: Injection Molded Part-Cost of tight tolerances -- ODONNELL Post Reply Top of thread Forum
Posted by: Cragyon ®
Bart
02/25/2004, 10:33:03

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I'm not sure about a rule of thumb with regard to tolerance significant figures, however, anytime you ask for a dimensional conformance which is at or beyond the natural process capability, the cost will go up.  By process capability, I mean any manufacturing process. 






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