Two of Dix Metals&rsquo; large Schaffer rotary surface grinders. In the foreground is a 66&rdquo; 200 hp unit. In the background is an 84&rdquo; 200 hp unit. The company uses these to grind blanks to high levels of precision. A Jorgensen conveyor system (behind the grinders) is used to remove fine particles from machining fluids used on the disk grinders. 