David, Did you fix the chuck ? we want to knowI had a mishap on the mill the other day and the R8 shank spun out of the chuck. The drill bit caught in mild steel as it broke through and crashed before I could react!
I don't care about the drill bit but would like to save the chuck if possible. Any ideas on how to fix this careless mistake?
You got a few good advice on how to loosen it, the fixture Mikey mentioned ( Aluminum with smaller hole) is you best bet in my opinion, just make sure it fits the correct part of the chuck .