apparatus they encounter a ramp 421 and a separating screen 422 the finishing material falls through the screen and is separated from the part and returns through a duct 423 to an opening 424 in the starting portion of the finishing chamber by 34 finishing material 34 or 34 finishing media 34 or 34 medium 34 as these terms are used herein it is intended to include loose comminuted granular or particulate and in any event solid finishing materials of the type which are presently employed in the trade and any others of a similar nature although liquid finishing materials may be used in conjunction with the solid finishing material these are considered to be ancillary for purposes of the present invention which in all cases employs at least some solid finishing medium for the process of the invention moreover the terms first set forth in this paragraph are used herein generally to designate such solid materials which are used to impart all types of finishes including those finishes acquired with abrading materials as well as with polishing materials and 34 polishing 34 is to be considered in its usual sense as one species of 34 finishing 34 as used herein in the specification and claims the term 34 compartment 34 denotes the spacial configuration defined by surfaces of adjacent part isolating means of the invention and within which spacial configuration or area the part or parts are positioned in.