I have repeatedly faced hurdles removing/replacing blades on my (two) grinders. I do have the two-prong tool to turn counterclockwise. But usually that's not sufficient. The underside apparently needs to be vice-gripped - according to comments from another question How to cut rebar with an angle grinder- I presume in the green rectangular area ?
I don't have any wrench that fits that description that is both:
- wide enough ~2 inches
- thin enough to fit below the blade and above the lower nut/bracket
How have folks done this: is there a special wrench for this - or other approach?