| 摘要 |
A guide coat is formed on a surface as part of a smoothing operation, e.g. of a vehicle bodywork, by distributing finely divided particulate material, e.g. a non-toxic, water-based black powder paint, over the surface so the material remains on and thus highlights any irregularities on the surface. The material may be wiped onto the surface by an applicator, e.g. synthetic foam or sponge (7), impregnated with the material. The material may be stored in a container (1) in a loose, finely divided form (2) or in a compact, substantially solid form (9) from which finely divided particles may be removed. The majority of the material is subsequently removed from the surface as the surface is abraded to remove the highlighted irregularities.
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