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Unread 17-01-2017, 13:55
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Re: Machining precision required to make custom gearboxes

Quote:
Originally Posted by JesseK View Post
We do have a reamer, but have had mixed results when using it on oblong holes. Using a micrometer on a sample after under-sizing still shows a position margin of error of around +/- 0.001 in a dimension.
This makes sense. A reamer will not change the center position of a hole, it will follow the existing hole. If a roughed hole is not on center position wise you'd need to use a boring head or plunge with a correct size end mill to fix that. Neither of those solutions will help you if your machine is positioning incorrectly to the center location though.
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