I don't use a die grinder, but have used an angle grinder on my lawn mower blade before. You've run through all the usual  (ugh) stores but one: princessauto.com. But most/all of their stuff is China made. I go to Princess Auto quite often for grinding, welding accessories.

You can also try busybeetools.com but I've not gone there for many a year.

https://www.princessauto.com/en/searchresults?Ntt=die%20grinder%20accessories
https://www.princessauto.com/en/searchresults?Nr=product.active%3A1&Ntt=rotary%20file%20set*

On Sun, 12 May 2024 at 22:22, William Park via talk <talk@gtalug.org> wrote:
Hi all,  Very off topic, but I'm fed up.

I sharpen my lawn mower blade with die grinder.  Problem is, all the
bits that I bought from Canadian Tire, Rona, and Home Depot, they all
wobble. Except for one bit. And, that has been used so much that I need
a new one, now.

If anyone has die grinder, what brand of grinding bits do you recommend?
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