Quoting Greg Bogantz <[email protected]>:
> The other Pathe type is what I call a > "pin vise" - it uses a threaded cone nut to compress the fingers of > the collet around the needle shank. And THAT is exactly what I was trying to describe when I was talking about a threaded compression ring. Another variation is the way X-Acto knife blades are fitted to the handle. Eric Stott
