I stopped using wire wheels on the bench grinder a few years back, mainly due to risk of those loose wires spearing around. I have too many inexperienced students in the workshop to be worrying about that, so I've opted for a 3M abrasive wheel. Its like a black open rubbery material with abrasive compound in it and removes paint and rust quite quickly. The downside: a bit expensive considering they wear away in use, and they don't form a good edge to get into corners. Basically not as effective as the wire ones, and while its possible to have something grab, they are safer to use.
Regards,
Makoz
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