Binding101 offers the Cornerounder® CR-50B Round Cornering Machine; a heavy duty table top round cornering unit for larger sheet size applications. The CR-50B is designed to handle paper and plastic products up to 1/2" thick. It offers shear action cutting for hard-to-do jobs and has a wooden top-plate for durability. This Corner Rounder will accept standard, special and large size Cornerounder® cutting units. One of four standard size cutting units is included with purchase. Standard sizes include 1/8", 1/4", 3/8", and 1/2". Shop Additional Cutting Units.