I was wondering if I was going to need one. Sounds like I do. I could probably make one but would rather just buy it.Can you machine back plates up there ?
damnYep , I know what you're looking for , hard to come by .
let me knowI just checked for back plates . Finished for $60 on the bay . I have a couple nice chucks with smaller back plates but I could open them up . Never have what I need .