Re: Amazing

Posted by Jeff63 on May 19, 2005 at 03:36:47 from (68.17.38.136):

In Reply to: Amazing posted by RustyFarmall on May 18, 2005 at 13:27:29:

I work at a tool and die shop. There is a machine called a toolpost grinder that attaches to a lathe and you can change speeds by swapping belts, 3000 rpm to 30,000 rpm. One of the guys made the error of winding a 6 inch grinding wheel to 30,000, it took about a half second to explode. When it did a piece about 1/2" x 1" hit another employee in the sholder, glanced off his sholder blade clipped the top of his lung and wound up behind his heart. Not much different than being shot with a rifle bullet. Another piece blew a hole in the metal roof that you could put your hand through. He survived after emergency surgery and has one heck of a story to tell but the main point of this is that this grinder looks to be the least dangerous machine in our shop but it came very close to killing someone.

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