Tech Question On Machine Shops: Tight Tolerances

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10/21/2020 Redacted Redacted

searcher Massachusetts Institute of Technology - MIT Sloan School of Management Johns Hopkins University

TECH QUESTION ON MACHINE SHOPS: TIGHT TOLERANCES

How good is +/- 0.0002” as a tolerance level?  Seems very precise to me.  Thanks!

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searcher Emory University - Goizueta Business School Rutgers, The State University of New Jersey - Newark - 10/21/2020

It depends on what you're machining but I would say, yes, that is very precise. I used to work for a company that laser cut medical implant devices and our tolerances were +/- 0.0005"

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searcher - 10/21/2020

As @Marc said, depends on the thing. For glass etching it would be best in class, for turbine bearings not so much...

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searcher Harvard University - Harvard Business School United States Coast Guard Academy - 10/21/2020

Agree on above. 100% depends on what industry/products you’re working with.

Recommend you call 2-3 of their competitions and ask what their tolerance is on their products / machines. They will overstate it by a bit, but it will give you a good idea of what ballpark you need to be in.

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admin Massachusetts Institute of Technology - MIT Sloan School of Management Taylor University Stanford University - Graduate School of Business - 10/21/2020

Anonymous - In addition to the comments you receive here, you might benefit from reading the IBISWorld report on Machine Shops. You can find IBISWorld reports on Searchfunder by typing "IBISWorld" into the searchbar along with the relevant industry. ^[redacted]‌ can probably help you if you can't find exactly what you need. Here is the direct link: https://www.searchfunder.com/post/ibisworld-report-machine-shop-services-in-canada

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intermediary Naval Postgraduate School United States Naval Academy - 10/22/2020

Be careful. Typical measurement tools cannot measure to that level. For reference purposes a human hair is typically about 0.002”. Production CNC machine tools cannot machine parts to that your quoted tolerance. Further, the market for such parts would be limited.

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