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Tool Talk Discussion Forum

The Dangers Of The Shop

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apz*jr

03-28-2007 06:31:34




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I learned on Sunday just the dangers of the shop. I was cutting a piece of metal with an angle grinder(Of course with a cutting wheel) and it kicked back and hit my leg. I am ok considering the 7 stitches and warning that it might get infected. I wish I could post a pic of the cutting wheel becuase the condition of that was horrible. Part of the wheel came off.

The best part was that there was no bone cut!

Be Safe-
apz*jr

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shannon from ohio

03-30-2007 18:01:29




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 Re: The Dangers Of The Shop in reply to apz*jr, 03-28-2007 06:31:34  
Running a grinder, Whether it is a bench type or angle type "NEVER-EVER" Run it without a guard in place unless you want to go blind or commit suicide. Bought a new one (bench type) put the new wheels on,Lit it up and let it run for a minute before using and ***KABOOM***!! One of the wheels exploded (not china junk?) Needless to say after i got calmed down from the scare, the grinder got sent back with a totaled guard..... .....

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Dan hill

04-02-2007 05:31:12




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 Re: The Dangers Of The Shop in reply to shannon from ohio, 03-30-2007 18:01:29  
If you use grinding wheels you should know how to ring test them.Before mounting them put a screw driver thru the arbor hole and tap the wheel lightly with a drill bit on the rim.The wheel should ring when tapped.If it dosent its cracked.I knew a fellow who got cut on his chin when a wheel let go.Always stand aside when starting a grinder, thats when they USUALLY break.Avoid side pressure on wheels,resin bond wheels are used on saw grinders where side pressure is used.Be aware that many wheels are badly out of balance and vibrate enough to make precision grinding impossible.Note that I did not say out of round, that can be fixed by dressing the wheel.A cone type lawn mower blade balancer can be used to check balance.I dont know if the ring test will work on small 4 inch wheels used on angle grinders.These grinders run at 10000 rpm and have a tremendous kick back potential.Avoid thin wheels , a small amount of side strain will break them.Angle grinders with slide switches are dangerous,A fellow dropped one while working on new snow plows.It bounced off the floor and cut his butt.The fore man destroyed all these grinders and replaced them with paddle switch grinders.Do not lock switches in the on position on drills and grinders.Do NOT use angle grinders one handed.I had one kick and come at my face.I had a face mask on so wasnt hurt.Wire brushes throw wire,you can pick wire bits out of your shirt or nose but wire in the eye is bad news.Use saftey glasses and a face mask around wire wheels.Dont use wire brushes or grinders around bystanders.I read a post where a man was killed when he started an import grinder ,new out of the box.A wheel let go.Years ago Sears had a sale on on 8 inch green wheels.The first one was broken up in the mail,refused it .2nd one was broken also.Had to drive 50 miles to get one that was ok.Resin bond wheels made the trip from missouri but were packed properly.

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shawnspeed3

03-30-2007 09:42:53




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 Re: The Dangers Of The Shop in reply to apz*jr, 03-28-2007 06:31:34  
the other thing to tell emergency personell/doctors if you happen to cut yourself with a grinding disk/sanding disk is exactly what you were using and that it is an abrasion, not just a cut/puncture.one of my workmates 10 yrs ago put a 3" 36 grit grinding disk on a 90 degree die grinder and was holding the workpiece and finishing the edge...the disk caught the edge of the hood, bounced the disk into his palm, leaving a 3" smiley face in the middle of his palm...off to the clinic we went, for a a good scrubing and a boat load of stitches, week later goes back to get stitches out , pops back open like the day it happened...inturn stiched him back up ....come back in a week..week later...same thing, pops right back open...oops, you did this with a grinder right????that is an abrasion we have to remove the damaged (burnt) tissuue so it will heal correctly, was the reply....co worker was not happy...6 weeks off work for a "cut"...Shawn

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tg in VA

03-29-2007 13:41:57




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 Re: The Dangers Of The Shop in reply to apz*jr, 03-28-2007 06:31:34  
A couple of weeks ago, my neighbor was sharpening his lawn mower blades in his shop using a stationary gringing wheel. The sparks ignited some oily rags and his shop, complete with a 1964 F100 with 35K original miles, burned to the ground. The fire was so intense, so quick, he got the truck door open but couldn't even get in it to move it. Fortunately he got out with out injury.

How many of us use a stationary or angle grinder without thinking about what's around us that the sparks could ignite? I know my nieghbor inadvertantly taught me an important safety lesson that day!

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Bob seND

03-29-2007 13:14:42




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 Re: The Dangers Of The Shop in reply to apz*jr, 03-28-2007 06:31:34  
Careful! Neighbor was found under his truck.
Was using an angle grinder, wheel broke and sliced his Carotid artery. Bled out.



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135 Fan

03-28-2007 20:49:19




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 Re: The Dangers Of The Shop in reply to apz*jr, 03-28-2007 06:31:34  
Some of the better thin cutting discs will break around the center instead completely blowing up. When using cutting discs you have to be extremely careful not to put any side load or too much force on them. I've seen guys use the side of them to clean up their cut piece and try to get as far away as possible. Pieces should always be clamped and make sure they won't pinch the disc at the end of the cut. On certain jobs it is necessary to use a smaller guard or take it off but it should be put back on right after. Wire brushes on grinders can be very dangerous as well. Dave

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James in North Carolina

03-28-2007 17:44:03




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 Re: The Dangers Of The Shop in reply to apz*jr, 03-28-2007 06:31:34  
I was ok with this thread until the guy got his nuts cut off! Next time I use the angle grinder, I'll add a cup to my safety gear.



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Blue3992 (N Illinois)

03-28-2007 13:02:36




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 Re: The Dangers Of The Shop in reply to apz*jr, 03-28-2007 06:31:34  
I always wear goggles and a face shield when using grinders.



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Stumpalump

03-28-2007 11:02:50




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 Re: The Dangers Of The Shop in reply to apz*jr, 03-28-2007 06:31:34  
I keep leather work gloves with mine now. Don't ask how I learned that.



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fixerupper

03-28-2007 07:59:46




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 Re: The Dangers Of The Shop in reply to apz*jr, 03-28-2007 06:31:34  
That must have hurt! Used to have some 3" cutting wheels from some cheap freight company and they would fly apart when I used them in the die grinder. Boy would they make a racket when the schrapnel went flying. I finally threw them away after I caught a little piece in my leg.



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Billy NY

03-28-2007 07:57:27




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 Re: The Dangers Of The Shop in reply to apz*jr, 03-28-2007 06:31:34  
Did the piece of metal fly off, then damage the wheel or did the wheel just explode ? A few stitches is a light sentence with shrapnel flying, but hopefully there is no infection.

Those wafer thin cutting wheels are handy, I've never jammed one in a cut, but a good reminder to be careful. Abrasive metal wheels are and can be nasty, I always use em outside, the particles get in everywhere. Been using Norton products for years, with good luck. The thing that worries me the most, is eye protection safety glasses and what they will or will not stop, like Old said, stay out the path as best you can. Removing the guard, I've never done that, if I can't get in there with it on, time for a different tool, if that wheel ever lets loose without a guard on, not good.

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old

03-28-2007 07:41:34




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 Re: The Dangers Of The Shop in reply to apz*jr, 03-28-2007 06:31:34  
When cutting metal in that way its best to have it in a vise so it can't get away from you. BTDT and ya it hurts big time. I also learned the hard way and now use a vise or clamp it down in some way or yes the metal will do its best to eat you. Alos NEVER stand in line with a grinding stone or other cut off wheel etc. Because if it brakes etc. it can and will cut you up. I have a friend that lost one nut because of a grinding wheel that blew up

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Easy1

03-28-2007 08:18:44




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 OUCH!!!! in reply to old, 03-28-2007 07:41:34  
OWWWWW!!!!! Self - Semi Bobbit!!!



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mike a. tenn.

03-28-2007 06:35:29




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 Re: The Dangers Of The Shop in reply to apz*jr, 03-28-2007 06:31:34  
one question...had you removed the cutting wheel guard like all of us do?



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apz*jr

04-03-2007 07:38:21




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 Re: The Dangers Of The Shop in reply to mike a. tenn., 03-28-2007 06:35:29  
I was using a 5" I think. I had gloves and glasses on. The cutting wheel just got caught on the metal, kicked back and hit me. Stitches out Firday.



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apz*jr

04-03-2007 07:36:18




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 Re: The Dangers Of The Shop in reply to mike a. tenn., 03-28-2007 06:35:29  
There was no guard there. If there was I might have just escaped with a stitch or cut...



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CENTAUR

03-28-2007 10:01:55




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 Re: The Dangers Of The Shop in reply to mike a. tenn., 03-28-2007 06:35:29  
It is very easy to exceed the maximum RPM of the product as stated on the wheel with an air drivin motor.They become extremly volatile when exceeding the max RPM.If you use a mandrell use the correct size so the wheel remains concentric.Use only a well machined mandrell.I had a customer who made his own and I warned of the danger of what I saw he had made and lucked out with about 5 or 6 stitches.CENTAUR

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Ken Macfarlane

03-28-2007 12:43:21




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 Re: The Dangers Of The Shop in reply to CENTAUR, 03-28-2007 10:01:55  
I got my face cut and safety glasses scratched badly when a 4" grinding wheel jammed in a cut and exploded. I now keep myself as clear as possible from the plane of the spinning disc if I have the guard off.

Glad I always my safety glasses too.



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BarryfromIA

03-28-2007 19:06:37




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 Re: The Dangers Of The Shop in reply to Ken Macfarlane, 03-28-2007 12:43:21  
Cheap wheels are not worth bringing home. Use a name brand wheel. They have to protect their good name.



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