Jeremy, The biggest bit I have been able to find was a rotary burr that was only one inch long.(cutterhead) That would probably work fine for grinding feathers with the addition of a bearing to index a flush cut, but I have other uses in mind. A larger bit like the one Charlie is using would be perfect for what I have in mind.

Guys! Like I said, a machinist friend gave me that bit dang near 20 years ago and I don't have a clue what it is or that it could be so hard to locate.

If a machinist supply place can't help I don't know what to tell ya.

Trying right now to remember the name of the big mail order machinist supply catalog we used to use when I worked in that biz.... but that escapes me too.

Poop!!!

McMaster-Carr has a 1" diameter with 1" cut length.

This may work.
http://www.acehardware.com/product/index.jsp?productId=1291688

Charlie, how tall is the cutter head on that bit? (Length between the bearings) I'm guessing it's close to 1 1/2" by the looks of it.

A shop vac will take care of the dust problem. Just set it up so that the hose plugs into a small hood around the backside of the bit.

I have emailed that picture of the bit to several woodworker friends and nobody has ever seen anything like it.

The quest continues...