"Bob La Londe" wrote in message
...
I I've never seen a chuck like this, but if I had one setting it up
to go on my lathe would be really close to project number one. This
is really cool.

Union chuck shown starting at about 0:45 seconds.

Don't care much abut the Cushman chuck he is actually planning to
work with later in the video.

https://youtu.be/nJKW8bgCv5s?t=45

A 6 jaw chuck with two opposite jaws removed will center square stock.