Angle Grinder for sharpening rotary mower

[Stubbyie]

Regarding 'grit' of the grinding wheels you'll be using, I bet you'll most commonly find 36-grit, with 24-grit being a close second, and occasionally at large stores you'll see small grinding disks in 60-grit.

Depending on your area retailers you may find a larger selection at a welding supply store. AirGas does me a great job on all kinds of tools and supplies in their Radnor house brand.

You won't go wrong with 36- or 24-grit on a bushhog blade. It may not be worth your time tracking down a 60-grit just to get that slight extra polish on the blade cutting edge.

I use 24-grit to move metal fast and use up less of the grinding wheel. After using the bushhog a few minutes it won't make a bit of difference what grit was used.

BE CAREFUL on startup and point the grinder where the wheel can't hit you if it comes apart. Use a grinding guard. If yours doesn't have one call the maker and ask for one at no charge as a safety issue.

We've got a couple 9-in man-killers in the shop and 9 times out of ten we'll reach for a 4.5-in.

Read the grinding wheel label for hardness rating and 'type' for metal or masonry.

Please post back your continuing experiences so we may all learn.

 

[bic]

Not real sure about brush hogs, but when I use to do a bit of sharpening, I made sure to balance the blade when I was done the rough sharpening (grinding out large nicks etc.) to ensure the blades were "balanced" to save problems with bearings later.
Just a thought to keep in mind, if you have to do a lot of grinding
Bic

 

[Tallahassee Kubota Man]

Got the Hitachi grinder in. It came with a 36 grit grinding wheel. Haven't used it yet since the blades are relatively new. The grinder appears built very well, is fairly light and has 9.5 amps.

Stubbyie, it came with a guard which I'd never operate without.

Will let you guys know how it works out.

Thanks for the comments.

 

[Tooljunkie]

Regarding grinding wheels- Walter. Nothing out there comes close. Fastest cutting longest lasting. If anybody knows of anything better let me know. Im always on the search for better cutoff wheels.

 

[OldeEnglish]

Regarding grinding wheels- Walter. Nothing out there comes close. Fastest cutting longest lasting. If anybody knows of anything better let me know. Im always on the search for better cutoff wheels.

Walter makes a good disk, but I usually get the SAIT disks. I find they are just as good and are a bit less expensive. Hilti makes good blades, but man are they expensive . I usually only use Hilti for diamond wheels and core bits, they last 10 times longer than anything I've used before.

I don't know about grinding wheels, don't use them enough to know which brand works better...