Buffing System??

[btboone]

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.

 

[Fred in NC]

Never found nylon ones, Bruce. Maybe you can make the tapers in your CNC, and we can drill them to size.

Just a Morse taper with a 1" x 3/4" cylinder outboard.

Put the taper in the lathe, push in all the way, and drill. The cut the slits as needed. It is easier to cut 4 slits.

Much easier would be to get a machinist type chuck for the lathe.

 

[jwoodwright]

Fred,

If you do as written, then what closes the collet fingers? Wouldn't they be flexible without a "locking" method...[?]

"Just a Morse taper with a 1" x 3/4" cylinder outboard.
Put the taper in the lathe, push in all the way, and drill. The cut the slits as needed. It is easier to cut 4 slits. "

 

[btboone]

Yup. I'd probably do it without the outboard part. That might prevent them from pulling back enough and being as stiff. It should be simple enough to do. Aluminum or plastic would be easiest for such a thing.

 

[Fred in NC]

John, the plastic should flex enough if you make the hole to just the right size. You don't need much give, just a couple thousands.