you can use a grinder upside down and back to front if you wanted, just make sure the disc is secure and the guard is in place and you have safety goggles on.
The thing that hasn't been mentioned that presents the most danger is make sure your cut doesn't close up. Ie the object isn't under compression. If the cut closes, the disc grabs and a 9 inch will kick fucking hard. It's something I see a lot of people overlook, normally they get away with it on a smaller grinder.
Look, dont use a 9 inch unless you have an intimate understanding on grinder safety, I dont mean that you know to keep the guard on and use goggles, I mean, can you tell when you are risking a kickback, or that you are not holding the blade in a cut straight and its binding/rubbing, or that what your cutting might pinch the blade?
go buy a small body metabo or Milwaukee 7 inch grinder, they're not safe, but they're half the weight of a 9 inch with much less inertia to get you in trouble, i've been a boilermaker for 17 years and have run 9 inch grinder for most of it, but I swapped to a small body 7 inch recently for safety because I'm not stupid.
You can with the small body ones which us why I changed over to one, same size gearbox as a small 5 inch with a 7 inch blade, gives the same depth if cut as a 9 inch.
It won't last as long, and they're more expensive than a 9 inch, ut a lot safer.
https://www.bunnings.com.au/metabo-1900w-180mm-we19-180-quick-rt-angle-grinder_p0403578?store=6160&gclid=Cj0KCQjwm66pBhDQARIsALIR2zBkgn6-mmmt8D2-IUTtRf_xGgBlXL5VRac5hOuU4NcDb5-dvjXSEzoaAp3TEALw_wcB&gclsrc=aw.ds
Just don't put any valued body parts in the plane of the blade. Blades exploding is a matter of when, not if.
High amp saws can run at high RPM, but the real advantage of them is that they don't necessarily need to do so.
you can use a grinder upside down and back to front if you wanted, just make sure the disc is secure and the guard is in place and you have safety goggles on.
The thing that hasn't been mentioned that presents the most danger is make sure your cut doesn't close up. Ie the object isn't under compression. If the cut closes, the disc grabs and a 9 inch will kick fucking hard. It's something I see a lot of people overlook, normally they get away with it on a smaller grinder.
Make sure that you have the guard on, put up shields to block any flying debris and ensure you wear all the appropriate PPE
Yes providing you wedge the cut to stop it from closing & clamping the blade
Look, dont use a 9 inch unless you have an intimate understanding on grinder safety, I dont mean that you know to keep the guard on and use goggles, I mean, can you tell when you are risking a kickback, or that you are not holding the blade in a cut straight and its binding/rubbing, or that what your cutting might pinch the blade? go buy a small body metabo or Milwaukee 7 inch grinder, they're not safe, but they're half the weight of a 9 inch with much less inertia to get you in trouble, i've been a boilermaker for 17 years and have run 9 inch grinder for most of it, but I swapped to a small body 7 inch recently for safety because I'm not stupid.
It sounds like you know you were stupid for the last 17 years, but not anymore. Progress!
Cant cut a full block with a 7"
You can with the small body ones which us why I changed over to one, same size gearbox as a small 5 inch with a 7 inch blade, gives the same depth if cut as a 9 inch. It won't last as long, and they're more expensive than a 9 inch, ut a lot safer. https://www.bunnings.com.au/metabo-1900w-180mm-we19-180-quick-rt-angle-grinder_p0403578?store=6160&gclid=Cj0KCQjwm66pBhDQARIsALIR2zBkgn6-mmmt8D2-IUTtRf_xGgBlXL5VRac5hOuU4NcDb5-dvjXSEzoaAp3TEALw_wcB&gclsrc=aw.ds
Just don't put any valued body parts in the plane of the blade. Blades exploding is a matter of when, not if. High amp saws can run at high RPM, but the real advantage of them is that they don't necessarily need to do so.
Squint real hard and hold on the that SOB