Extruders Browse by Category Wadmills and Clay MixersStarkey Machinery manufactures single, double, and triple shaft custom wadmills for extrusion where de-airing is not needed. Laboratory and Small-scale Production ExtrudersWe make a variety of all Stainless Steel high pressure lower-volume extruders to meet a broad range of needs. Pugmills and Vacuum ExtrudersWe manufacture a diverse line of custom vacuum extruders to meet your specific needs. This includes extruders with positive displacement vacuum chambers. Used ExtrudersStarkey Machinery Inc. maintains a large stock of used equipment. We can provide "as-is" used equipment or rebuild to "like new" condition.