Hi all,
New to the forum, but have used the site/others' responses frequently and it has been a ton of help. However, I do have a question to pose because there has been debate with colleagues and I would like some input from the machining world at large:
We have been presented with a drawing for a part from a customer which gives a cylindricity callout of .07mm per 1 meter with no overall cylindricity. We machine everything in inches. The direct conversion is: .0027"/3.28 ft. The part to be machined is approximately 17" long. The question is this: With no overall cylindricity given, do I have a total of .0027" for this part since the part length falls within the 3.28 ft? OR is it necessary to convert the .0027" to a per inch callout and multiply by the overall length of 17" (which comes out to be .0008")?? Depending on which is technically correct, the cylindricity callout is either .0027" or .0008"; pretty big difference.
Any input from you guys is greatly appreciated,
Ed