Abstract: A lapping machine operable with a lap wheel for lapping gold jewelry and adapted to collect gold dust produced by the lapping machine, includes: (a) a base, (b) an electric motor mounted to the base, the electric motor having a rotatable output shaft extending upward and adapted to be coupled to the lap wheel which is situated above the electric motor and rotates about the axis of the output shaft, with a gold dust debris space defined as the area surrounding the lap wheel and extending from below the lap wheel downward and surrounding at least part of the output shaft, (c) a shroud comprising rear and opposite side parts that surround the rear and opposite sides of the gold dust debris space respectively, thus leaving the front of the gold dust debris space open and accessible, the shroud including a continuous front wall and a continuous rear wall spaced radially outward of the front wall, with air flow passages defined between the front and rear walls of the rear and side parts, the front walls of the side