We have acquired a Zeiss Contura G2 that allows for evaluation options. Average is there, Maximum Inscribed Circle, Minimum Inscribed Circle, ISO XXX etc...
I agree with the comments made above. As a custom molder we treat it this way. Product should be all inclusive of print tolerance. If the product through first article or capability proves to not meet this requirement - then we ask the customer for clarification. Transfer tools will be different than a new tool. One lesson I have learned is get in early - ask questions about application and do your homework with the numbers. If you are clearly not capable, but the original designer was cautious, work with the customer on what you can do - recommend tolerances.
Back to the Contura. I use maximum inscribed and minimum circumscribed with scanning technology with no less than 50 points. The idea is to duplicate a pin measurement, but to capture min and max along the way.
Ken
I agree with the comments made above. As a custom molder we treat it this way. Product should be all inclusive of print tolerance. If the product through first article or capability proves to not meet this requirement - then we ask the customer for clarification. Transfer tools will be different than a new tool. One lesson I have learned is get in early - ask questions about application and do your homework with the numbers. If you are clearly not capable, but the original designer was cautious, work with the customer on what you can do - recommend tolerances.
Back to the Contura. I use maximum inscribed and minimum circumscribed with scanning technology with no less than 50 points. The idea is to duplicate a pin measurement, but to capture min and max along the way.
Ken