Surfaces which are blasted with round or angular abrasives are cleaned and prepared for downstream coating processes. Descaling and deburring of cast or forged components, descaling of and rust removal from steel profiles or the removal of old paint and other coatings are just a few typical examples. Especially when angular abrasives are chosen, shot cleaning alters specific properties of the surfaces. It can be used to roughen brake pad mounts, for instance, create a positive fit with brake pads or roughen surfaces in prepara- tion for a subsequently applied metallic coating, e.g. prior to galvanising.