#11
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"I never use a grinding or cutting disc without a guard, I can't believe anyone would." - David
I totally agree David, though I did know a work colleague who did ( believe it or not a firefighter) He removed the guard to fit a larger cutting disc. This broke up at high speed and a large chunk went through his chest, knocking him off his feet and putting a cut in his aorta. In his words " I felt alright laying there on the garage floor until I heard my mate (another firefighter) calling for an ambulance in the house and screaming down the phone "Hurry up, he's ****ing dying out there!" He's still here to tell the tale but - Stupid, Stupid, Stupid......
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Phil |
#12
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The guy's tatoo says it all. Those cut-off wheels are unforgiving when they cut loose!
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Bob Foster |
#13
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So far in this thread I haven't seen mention of matching disc speeds to the tool, other than these two consequences of NOT matching:
Quote:
Quote:
Every disc in turn has a maximum safe speed. Putting a disc, even a correct diameter one, on a faster turning arbor than its design limit is asking for trouble. Putting a larger diameter disc on a smaller grinder than it is designed for is begging for trouble, as the maximum safe speed is likely to be far less on a larger diameter disc. When I taught shop, I had to keep all the abrasive discs in my office, after I caught a student installing a hard grinding disc rated at 12k max safe rpm on an air sanding tool rated at 20k no load speed. It fit perfectly well, and it was the same diameter, so why not?.... I have mentioned this before, quality abrasives can save money through better wear characteristics. I might add now that they can also save on drama.
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Mark from Illinois Last edited by weldtoride; 05-15-2014 at 12:45 AM. |
#14
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No guards
My 40+ year old Milwaukee never had a guard and I have felt the wheel a time or two. Felt it the most with a shrinking disk. I could see my knee cap (without the skin.) Fred 26t
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Fred26T |
#16
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Lis imagine what would have happened if you had a cutting disc on it.
David
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Metalshaping DVD. www.metalshapingzone.com Metalshaping with hand tools on youtube http://www.youtube.com/watch?v=IGElSHzm0q8 All things are possible. |
#17
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I bought a metabo 5 inch grinder specifically for using with cutoff wheels. It has a guard that adjusts without tools and a built in clutch. Also use a standard welding helmet with flip up lens and leather gloves when cutting.
Am also surprised that more people have not cut off fingers or had discs impaled in their faces more often. I’m not a safety Nazi by any stretch as I do many unsafe things but these cutoff discs just seem so obvious.
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Greg |
#18
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Only problem with cut off discs are operator error. Been suing them many years and only Tim's I got hurt or had close calls is,when I was doing something I.shouldn't have.
They come with a handle for a reason. Use it. Blow the sparks towards you, that way if it grabs, the tool goes away from you. Brace yourself, and your arms. Use your hands or fingers as a kickstand to the panel for stability. Always assume the grinder will catch, keep yourself out of the line of fire. You can do some very fine and intricate work with a cut off or grinder, if you follow these tips. Too many people are not skilled enough at grinding. Like welding, it takes practice.
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Results = (Effort X Determination2) + Time |
#19
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I have not seen such a grinder in the stores near me. Can you put a picture or link me to a page where I could see the grinder.
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#20
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http://www.metabo.us/Product-catalog...856a1cd.0.html
In the states they are sold at welding supply or safety & industrial stores. Never seen them at big box stores, Home Depot etc. Too expensive to put next to the dewalt and makita grinders.
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Greg |
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