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Thanks again, this is great help. The drawing does not reference any standard, but it was originally from a source in europe. If the date is accurate it is from '92. There are no notes about basic tolerancing, only the note about unspecified tolerances. If I had to guess, this drawing may...

Thank you for your replies. Personally, no I wouldn't say I have formal training in GD&T, but many years of practical experience. In a nutshell, we are a manufacturing plant and I disagree with the customers interpretation of the tolerancing on this old drawing. I too have been assuming basic...

I'm sorry I did not make myself clear ... these are not my drawings or can I change them in any way. I'm simply trying to interpret what is already there. I'm just not sure how to. Well, I'm pretty sure I get what the drawing is getting at, but them someone says your wrong, doubts creep in...

We have a discrepancy between options about the positional tolerance of a drilled hole in a cast part. I would appreciate anothers opinion. The drawing calls out the following tolerance (as closely as I can imitate the actual call outs, I wish I could attach a drawing): 4 HOLES (diameter...

Well, the material specs are 6061-T6, but the customer is aware of the difficulty we are having obtaining the grain control products. I know they would be open to changes. The basic requirements are mostly cosmetic, even more so than dimensionally. I believe they settled on the current spec...

Thanks for your reply ... TVP, basically the parts are anodized as a customer requirement. The short answer is it's a price justification issue, the end customer is essentially paying more for high quality materials and our customer doesn't want to cover that up with just paint. swall, I'm...

We are experiencing spotting in turned 6061-T6 bar stock. The bar stock is turned and either anodized or polished with a high cosmetic requirement. In the past, our only resolution has been to use increasingly difficult to obtain "control grain" products (Alcoa's 6061-T6511X or Kaiser's...