So here’s the situation: turning some simple aluminum disks with only a few features. On the main side is a simple detent interface and on the sub side literally just a necked down diameter from the middle. Almost like a spinning top. Very simple part, both side features are +/- .0004.
The issue is, every 40-70 parts or so, the sub side diameter suddenly increases anywhere from .002 to .015 at the worst instance of this issue. To keep making good parts I of course offset it back down as a bandaid solution to keep the job running. Then, inevitably, the dimension jumps back down making undersized parts. This is after a similar number of parts, but usually less, maybe 30-40. Repeated several




