Originally Posted by
bulgie
Hmm, somehow I never once saw a mechanic use a grinding wheel on a cotter. Any wheel tends to make a hollow-ground shape, not a flat plane. I consider using a file a no-brainer since it's plenty fast and makes the desired shape "naturally".
...if you look at the sides of the grinding wheel, I'm certain you will see a flat plane. This is what you use to grind them to full cut before a light filing for finish. Without a bench grinder, I don't think I would ever work on another Peugeot with cotters.