Cordless grinder, good grinding disc options?

[DieselSaves]

I have several M18 Fuel 5” grinders and they have been great. One lives with a Harbor Freight flapper disc or wire cup brush, one lives with a Metabo Slicer 5” disc, and the last one gets whatever grinding wheel I happen to have. I’ve used Dewalt grinding wheels, Pferd, and some generics and cheapies, and I don’t see a huge difference in most of them.

I get that these cordless grinders are not metal removing animals and that’s fine. I did just order the M18 4 1/4-6” grinder to try and I’m looking for grinding wheel recommendations for this new, hopefully more powerful, grinder. I’m also interested in what wheels are out there that may excel on my other cordless grinders.

 

[rsanter]

I really like the diamond coated ones and that’s what I use in place of a grinding disc 95% of the time
What I have is around $100 and lifetime guarantee. They have replaced it once after about 4 years of hard use

 

[Retroman]

I just use flap wheels for 90% of my grinding (which ain't a lot) There is a company that will send you 10 free flappers of different grits. The brand is Benchmark Abrasives. Someone on here probably has the link or you could search for it.

 

[Rinspeed]

A little pricey but the Walter discs are top notch.

 

[cdeer001]

Benchmark Abrasives

4-1/2" x 7/8" T29 Zirconia High Density Flap Disc - Mixed Grit 10 Pack (FREEMIX)

Benchmark Abrasives 4-1/2" X 7/8" T29 Zirconia High Density Flap Discs are manufactured using European zirconia cloth. Our mixed pack is a great opportunity for you to test our range of grits at an affordable price!

benchmarkabrasives.com

 

[dnschmidt]

Walter, Pferd, 3M Cubitron II and Norton Blaze. Frankly, I get mine from Valley Forge Abrasives (get the ceramic) and they work fine. Little known fact. VERY few companies (like four in the entire world) make the cloth backed abrasives used to make flap wheels and the overwhelming market leader is VSM in Germany. Most good flap discs use VSM's material. Valley Forge Abrasives uses VSM material.

 

[tarbellb]

Flappers have their place but my preferred disc:

fiber disc and backing pad hf pad $10


so much better to switch out a used up disc for fresh then deal with a beat up flapper

disc are cheap, like $.25-.50 each

 

[engineer2]

Makita diamond and abrasive wheels are excellent as well.

 

[seber]

I use any name brand flap discs and run them over a CBN grinder dressing stone when they get dull.