Originally Posted by Andrew R Stewart

So using Park cone wrenches for, maybe, 30 years has all been wrong?

I've used most all the old guard "pro" brands. Bicycle Research, Eldi, Campy, Park, Kingsbridge, Var (and some that weren't marked) and many of the current ones. I can't agree with your statement. Sure, all wrenches get dinged by the force of working a thin flat. But a simple grinding down of the flaring and all is well. Until a few years ago all I used were double ended (mostly Park) wrenches. But with my old age I find the longer handled single ended Parks to be easier to work with but I won't say that they are stronger or harder then their double ended ones that I still have on my home bench. Andy