btboone
Member
Eagle, if the diameter closely matches the brass, it would not cause damage. It's not really 3 point contact, it's more like circular contact with a couple segments missing. There are also some collets like that made from nylon. I know they're available in R8 taper, which is larger, so someone probably has morse taper ones as well. They're called emergency collets or soft collets, and you drill whatever size hole you need in them.