That will teach you for volunteering…

how was it mounted ? U know there are two ways for the ring nut to mount the stone/cutting disc………

the deep side with the step is for the thick grinding disc's and the reverse ie flat side is for yjr thin cutting disc's…..

mind u there are some cutting disc's that are NOT flat, they have a similar dished profile to the heavy grinding disc's

U probably know this already ?????

I only use St/St cutting disc's now as they out last the norm one's and I get thru at least 1×9" disc per week, the problem u've had has never happened to me…..

be careful out there………..

Clogs……..

I got one of these a few years ago for doing dodgy jobs

Comes in handy now and then

For those of you with a Facebook account, here's an example of why one should wear safety glasses.

Don't worry it's not gory, unlike one I was with a chap sporting 1/2 a cutting disk sticking out of his chin.

**LINK**

I use something similar to the one Ady1 mentioned, but also have one of the old "Bubble" visors which clips to the front of an open face motorcycle helmet. I mounted it on the headband from a redundant welding mask so it flips up when not in use. Thick impact resistant plastic, so hopefully should be pretty strong, and resembles one of these.

Regards

Bill

A while bach I was at the local stainless steel fabrication shop to get some TIG welding done. While my job was being done, the apprentice was given the job of cutting a piece out of some stainless sheet, so in with the angle grinder–BANG shattered the disc, replace disc, off he goes again–Bang, gone done it again, boss comes out to see whats going on, I got out of the road while a bit of a lecture went on about remember what you were taught about grinding, one of those situations where you know someone is approaching the job in the wrong way, but it's not your place to intervene. The weld on my job failed too.

Ian S C

I always regard angle grinders and their discs as I do mothers-in-laws,with great respect,since both are quite likely to explode when least expected,and for no obvious reason.

I do use grinders,but I am always wary of those thin cut off discs,one is tempted to use them to grind off that little of junk,rather than change the disc [we,ve all done it ]

You were lucky,dont push it ! no body looks well with a disc sticking out of their head,well,very few anyway.

I'm always amazed by the builders/block pavers who use angle grinders without any form of protection, stupid is not really a strong enough word.

Tony

I think most of them use diamond discs for ceramics.

The threat is slightly different with diamond cutting discs I'd say.

That they're using diamond probably shows they're smarter than most!

I was once using one of those segmented diamond cutting disks in my 6" angle grinder to cut a tile or something similar, for whatever reason, the disk caught on something and shattered throwing one of the segments directly at my fingers, fortunately I was wearing my welding gloves and it simply bounced off, it still gave my fingers one hell of a belt though, without the gloves I would almost certainly have lost some fingers.

I was also wearing goggles, hearing protection and a respirator style dust mask, I am seriously contemplating a face shield for future use though.

Years ago I was using a 4.5" grinding disk in the angle grinder a bit too aggressively when it shattered completely. The fragments mostly hit me in the chest and I was wearing several layers but it was one hell of a thud. If it had been my face it would have been a very sorry story. Do I wear face PPE now – yes. I even bought full face shields!

I am very wary of angle grinders these days. A couple of years back, I was using one with a sanding disc attached. The person for whom I was doing the job told that I was holding it all wrongly and showed me how to do it "properly". The thing promptly snagged and kicked back into my face: "properly" is not the same, it seems, if you are left-handed like me……….

James.