Originally Posted by bangkaboat
I can only comment on the basis of my own experience & education. A few years ago, the nice people from Walker spent a day educating us(Vancouver Drydock) on all of the equipment
they were supplying, after one of our labourers hurt himself. As we steelworkers were using their 5" grinders, exclusively, we were surprised that they spent so much time on the issue of mixing disks in the afore-suggested manner. Still, as we were paid to be there, no one complained. Now, after about 35 years of using grinders, formally & informally, I now have a piece of paper that says that I know how to use one.
However, when I was 19 & a steel
fab. apprentice, I used the remnants of a 9" disk in a 7" grinder & ended up with 162 stitches in my left thigh, when the disk exploded. I had a lot of time to think about it while riding to the hospital with a first aid attendant's thumb holding my artery against my femur. So, once again, I suggest that this is an ill-advised practice.
Yes! And I've seen a guy get all wound up in a lathe because of one single
thread hanging from his apron.
The operation of powered tools is an assumption of risk we all take any time we hold a tool. I too had a nice gouge taken out just above my knee (10 stitches) from a 9" grinder. But in my case it bounced off a unseen weld and hit me right in the leg. Instant meat grinder.
I now use a death grip on the big ones.
If one doesn't feel comfortable down sizing discs, then they shouldn't do it!!!!
But on FG I doubt that would even be necessary.