We do...there's just so many pics to see and comments on
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Actually, the guys need eye protection, even on the buffing wheels. Most of the pics show buffer wheels mounted versus actual grinding wheels but there's some spark-shooters too. Bill, have there been any wheels fly apart so far? That can happen. One cure is to run the RPMs lower than the rated max on the grinder disks, but if the disks are of low quality even that might not help. Polishing/buffing is much safer than grinding. The "magic stone" disks are also pretty safe, although they might be more of an eye hazard.
Also: in this sort of guardless configuration, it's tempting to use the sides of a grinding wheel. That's not a good idea, they need to be warned away from that practice...it can lead to a wheel flying apart, sending what amounts to a spray of full-auto stone bullets all over the place. A shattered solid stone disk at 8,000RPM could lay waste to half the shop.
Too many of the grinder pics show no eye protection, Uncle. Even when polishing/buffing, that's not good.
My dad was a machinist and taught me "garage grinder use" at an early age. Sorry if I seem judgemental here, that's not my intent...you'll have to add in basic industrial safety training with the power tools.
For that matter, in the top pic there's a bulge in the power cord that would seem to be an on/off rotary switch? If so, it's probably two-wire ungrounded cord? I hope the guys understand basic electrical safety, including the dangers of water?
What else...fire extinguishers? Now that there's electricity in play, pouring water on a fire might not be safe.
Jim