防水的粗鲁的文件

waterproof abrasive paper Silicon carbide waterproof abrasive paper Material Materials used for the abrading particles are : no longer commonly used : commonly used in : commonly used to abrade or polish metal : perhaps most common in widest variety of grits; can be used on metal (i.e. body shops) or wood : available in very coarse grits all the way through to microgrits, common in wet applications alumina-zirconia: (an aluminium oxide alloy), used for machine grinding applications : used in extremely fine micron grit ( level) papers : used in high pressure applications, used in both coated abrasives, as well as in bonded abrasives. It is used to remove small amounts of material from , either to make them smoother ( and ), to remove a layer of material (e.g. old paint), or sometimes to make the surface rougher (e.g. as a preparation to ). ISO/FEPA Grit designationCAMI Grit designationAverage particle diameter (µm) MACROGRITS Extra Coarse (Very fast removal of material) Coarse (Rapid removal of material) Medium (sanding bare wood in preparation for finishing) Fine (sanding bare wood in preparation for finishing) Very Fine (final sanding of bare wood) MICROGRITS Very Fine (sanding finishes between coats) Extra fine Super fine (final sanding of finishes) Ultra fine (final sanding of finishes)