We do alot of mixed materials in our mini mill... cast iron, bronze, stainless, alloy Steels etc. We are getting a ton of fines built up under the chip screen from running the bronze and cast iron. We obviously dont use coolant for the cast iron and we try to pick out, clean & vacuum the cast iron chips before running the next job but the small stuff always finds a way into the coolant. Has anyone come up with a filter/screen solution to prevent this from happening as much? We use a chip trapper to filer the coolant at least once a month but the amount of build up under the factory chip screen we usually have to scrap out by hand because there is so much. Should note we do not have the chip auger option on this machine. Basically we are trying to figure this out because we are switching coolant brands soon from hangstefers s-500 as it is not working well in the high pressure coolant pump (foams & seperates). Also the NexGen skimmer on the machine clogs up easily with the fines in the coolant.