Here are four parts which might be troublemakers anywhere else, but become socially acceptable among the Swiss. PMC 343 is an example of a long skinny part. Where else could you turn those journals and form all those grooves while maintaining straightness? Where else but the PMC Swiss!
The entire outside, including the back taper, of PMC 598 has to be smooth. The .002" concentricity is copied from the centerless ground bar, and finish will be kept because the Swiss do not employ feed fingers to advance the bar. (The taper is matched smooth.).
Making PMC 723 to print was not a "piece of cake" and it took a little extra imagination to keep the finished parts free of nicks. The diameter and concentricity tolerances of .0003" and the wall thickness of .012" were all accomplished without the use of mirrors.
PMC 1570 is just an example of a long turned part with smooth generations. There are no close tolerances, but we wouldn't like to try this on anything but the PMC Swiss.
We hope this helps you to identify a problem which can be tamed by the PMC Swiss. As soon as you see one, give us a call at (847)-808-8094 and ask for Bob or Bryan. It will receive our immediate attention.