The similar results could be noticed after manual polishing of the surface. In the technology processed in NTP company, the
effectiveness of vibro-abrasive machining as the basic method for preparation of cast surfaces before
plating process was used and verified. To verify the obtained results, the tests determining an influence of
individual processes on the quality of the obtained coatings were performed. The main variable was the
surface preparation method i.e. condition after casting, grinding, polishing and vibro-abrasive machining.
The tests showed that the surface condition directly after casting is not suitable for galvanic plating.