... etching and providing a profile on stainless steel, cleaning of steelwork, heavily corroded components, valves, auto wheels, preparation ... , polishing, mould cleaning, removal of heat discolorations, deburring, and the removal of almost any surface blemish where a minimum alteration ... inert, and silica free, there is no risk of corrosion or any contamination. Glass beads produce a smooth, bright finish ...