Tom
Thank you very much for the honest and brutal response!
(seriously!)
I was looking for a quick reference for designers to consider. Practically everyone has indicated there ain't one.
It is likely (as you pointed out) impossible with a one of design (R&D).
You have no idea how much this...
I follow what you both are saying.
I've always understood that a closer tolerance required more attention and care resulting in more effort and drives cost up.
Maybe this line of thinking is wrong... however I know that some materials, shapes are trickery to get a close tolerance on because of...
KENAT
Typically (but you are correct that it is not always) a drawing will have a default tolerance block to fab/mach to if no other tolerance is noted.
As I mention before I am from the end of an era when drafting as a "trade" was phasing out and... well here we are.
Back in the old days...
Thank you all for your responses.
I was wondering how a machine shop might quantify an estimate in that this line of thought could be a useful reference tool to a designer ... where do we draw the line in specifying a tolerence ... something to aid in deciding how necessary a fine tolerence...
Is there any information out there, quick reference tool of relative machining costs related to dimensioning style?
i.e.
1) dimension style: fractional; suggests a metal scale or measuring tape used = +/- 1/32" accuracy is adequate and means less care required, less cost.
2) dimension style...
