huangyhg

tolerances of different process
hope this is the right forum.
i need to specify flatness, straightness etc but i never know what is a realistic value to place on the tolerance. most things are machined and ground if need be. i understand that for straigntness/flatness the overall length must come into it but i have no idea what to put on.
are there any web resources etc that may help?
thanks in advance
parsnip
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