I got a bike with a smattering of Shamano stuff on it. I got it to put Campy stuff on it. I go to pull off the cranks and find the arms seem to have been pounded on the spindle over he spindle bolts . One side still had good arm threads, so i put a puller on and pounded it with a hammer until the arm was backed off the spindle and I could then spin the arm off with the bolt still wedged inside of it . However, the ring arm has bad threads and I can't get the puller threaded in .
What to do?
try cutting the spindle with sawsall?
start moto grinding the arm apart and split it off the spindle?
Tried a gear puller for autos and it would not grip the arm, kept slipping off . Can't find a wrench thin enough to slip behind the arm to unscrew the spindle cap after cutting off all the spider arms.