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What are you cutting?
If it’s stone/brick/concrete there are several choices, but personally I don’t use anything other than diamond discs now. The best I’ve found are Marcrist, and I use the same discs on all building materials - brick, block, plaster, everything.
If it’s metal, then I think the type of disc, and even it’s grade, are more important than the maker (provided it’s one of the decent makers). I don’t use anything thicker than 1mm now (except on aluminium) and the old thick discs feel really primitive if I pick one up. I also find it’s worth getting discs suitable for cutting stainless. They cut stainless or mild, regular discs only cut mild.
I generally use Norton as I’ve found them consistent over the years and I trust them. I also like the way they clearly explain their grading (good, better, best). I’m currently running Norton Blue Fire Inox in my 4 1/2” Fein, which is pretty much a dedicated cut off tool, but even Norton”s cheaper “Neon” discs are o.k.
I’ve used Bosch and Makita discs too, and they’re also o.k. but I don’t reckon they cut like the Blue Fire’s. I flat out refuse to use crappy discs. It’s not just about cutting performance and disc life, but safety, and I don’t take chances with grinders.
I should add that I’m in the U.K. so the brands I may have available might be different to yours!
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I use them all. The metal cutting diamond disk work well tool just they seem to bed louder. But I do like the diablo ones as well. But I use whatever I have on hand. When it comes to price you either pay for it in quality or quantity. The cheaper disk burn through rather quickly and the more expensive ones last longer. But remember to always let the disk and the tool do the work and try not to force it through the material.
Sent from my iPhone using Garage Journal
Millwright/fabricator here. A cutoff wheel is probably our most used cutting tool. For me it goes:
CGW (best all around disc I've found)
Sait (as good as cgw but pricier)
Metabo slicers (cut well but vanish before your eyes)
And anything from norton abrasives.
Oh and if you can avoid it, don't get the .040s get the .045. The little bit makes all the difference in stoutness of the disc.
The only one I know to avoid is the dewalts from home depot, they last forever because they don't cut anything.
All this being said I wouldn't use a 4-1/2 inch cutoff disc. Everything I use is 6 inch and by the time they get 4-1/2 inches they are worn out! To me a 4-1/2 in metabo would be good for a grinder not a cutoff. If you're doing serious cutting try a 6 inch.