Before revision: Tumble finishing, also known as tumbling or rumbling, is a technique for smoothing and polishing a rough surface on relatively small parts.
After revision: upright=1.35|Small rock tumbler with the barrel in place, ready to rotateupright=1.35|Parts breakdownTumble finishing, also known as tumbling or rumbling, is a technique for smoothing and polishing a rough surface on relatively small parts.