Plate Bevelers, Self Propelled, Portable - KBM-18® produce clean machined bevels with no thermal distortion on mild steel, stainless steel and aluminum plate from 1/4" (6.0 mm) to 1 1/2" (38.1 mm) thick. Thinner material can be beveled... consult factory for details. The KBM-18® bevels the topside of plate reducing time and cost. Savings are further enhanced when the topside Beveler is used with the KBM-18U underside beveler in applications where both sides of the material require beveling.