Abstract: A machine for finishing parts, having part-isolating means such as vertical partitions or dividers, defining one or more compartments, disposed at least partially within the finishing chamber, each compartment designed to accept a part or parts to be finished and to maintain parts isolated from other parts. The finishing chamber and the part-isolating means are movable with respect to each other. As a result, as the part moves along the finishing chamber during the course of the finishing process, the compartment defined by the part-isolating means, e.g., partitions, moves longitudinally with the part and isolates it from other parts. In one embodiment of the invention, the part-isolating means, such as partitions for defining compartments for the parts, also moves vertically or pivotally with respect to the finishing chamber, e.g., to clear rises therein. Thus, in effect, the compartment surrounding the part and isolating it from other parts, moves with the part.