Buffing and polishing are similar although polishing is technically defined as a process where the abrasive is glued to the work wheel but in almost 100% of industrial applications this is not applicable. Usually the product to be treated is metallic but could be plastic or glass. It could be plated e.g. with a chrome layer applied. The buffing action is normally applied via a rotating mop or brush, often with a mild abrasive fluid applied; alternatively soaps or waxes may be used to aid the buffing process.The surface being treated will be change and minute particles of host material may become dislodged. Extraction is required to maintain air quality in the workplace environment. There may be hoods or the work may be done by robots in a booth. Close coupled extraction is essential both to minimize splatter but also to limit the amount of extraction flow required.  By far the greatest part of the contaminant loading in the extracted air will be mop or brush fragments and aerosols of the waxes or fluids applied. Because of the sticky nature of the contaminants the duct work should be a straight and short as possible. RotoClone type N is the ideal collector.