Heavy Duty - Variable Speed Cutting Mill with Auto Feeder*Contact Eberbach for information on Cutting Mills. The E3703 Large Benchtop Cutting Mill features a 7. 75 inch diameter sealed cutting chamber with six stationary blades and a rotating cutting head with four replaceable cutting blades that revolve at high speed to produce a shearing action that minimizes heat build up. The R6 Model includes a 6 bladed rotating cutter head instead of the standard 4. The additional blades allow for faster sample