Just a useful bit of trade info, when I was taught to use wheels for creating a matt surface we always used a scratch brush unit, which has the polisher motor's spindle facing the operator, which in turn meant that any pieces of wire brush that came loose did not spin towards the face of the operator as they may do if used on a standard polishing mop. When I use grinding wheels or matt mops on my pendant drill I have a perspex screen the I can work in.
James
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