I stumbled across this on the internets, forwarded it around to a few of my knife-making buddies, and everyone had a good laugh and a snark and then got quiet. The only way to deal with it is to assume it’s a set-up.
I judged the winner in the snark-fest to be Mike, who said “He’s just finished welding, with his TIG machine balanced on the post, and is grinding down the welds. Nothing to see here.” And then there was my original comment which is “See what he’s doing wrong? He has the angle grinder upside down!”
A great deal of my time is spent with an angle grinder in my hands and I’ve had a few opportunities to think over what’s going on. First off: do not, ever, use one of those “chainsaw blade wheels” for wood removal. Sure, they are really fast but they’re also a good way to see what the interior of your hand looked like. Secondly: angle grinders kick in the direction they are held. If you hold the grinder vertical, it’ll kick vertical. If you hold it horizontal, it’ll kick horizontal. That means: never hold an angle grinder vertical, like this guy is doing. If you hold it horizontal, then it can gouge the hell out of the people on either side of you, but it won’t come back at you.
Back in 2019 I was cutting some steel with a diamond wheel on the angle grinder, and suddenly my index finger on my right hand got hot. I looked down and there was a neat slice through the glove, my fingernail, and my finger. Fortunately, it wasn’t too deep but it took just a fraction of a second – it was a brand new diamond wheel (as if that matters!) and I had knocked the guard out of alignment when I replaced it, so my hand slid up the grip until my finger came into contact with the wheel. Ow. The problem with abrasion injuries, as opposed to slices, is that there’s nothing there after the injury, so you have to wait for the wound to fill in – you can’t just tape it back together and hope it heals like I did with my katana mistakes. My fingers are a mesh-work of scars, but I still have all of them. As Ray Wylie Hubbard once said, “I want to slide, smoking and bleeding toward my grave and its eternal rest, while the umpire yells, ‘SAFE!'”