The Purging Recovery System first slices or planes hard lumps of plastic purgings into small pieces, then reduces the pieces to uniform, high-quality regrind. The heavy-duty machine draws on the simple concept of the carpenter’s plane. It consists of a table that is split into two levels and a purging containment chamber that, upon startup of the system, moves back and forth over the table surface. A rotor with staggered knives mounted at the point of disjunction between the two surface levels turns at 1,750 rpm, reducing the purging to small pieces and propelling them at high speed into the hopper of a compact granulator beneath the table. As material is planed away from the purging, a pneumatically driven hold-down plate in the containment chamber keeps the purging in contact with the knives.