Longworth Chuck

Inspired by this thread on BT3Central.com I built a Longworth chuck (see here, here and here). I modified it a bit to have 6 instead of 4 slots to improve holding power. DSC01972.JPG DSC01973.JPG The bolts are from one of Rockler’s T-Track kits, and I used rubber feet and nuts also from Rockler. DSC01974.JPG This was a much cheaper solution than jumbo jaws, and has the advantage of not blocking a chuck or having to swap jaws frequently.

Addendum: I have used it for some time now. It works fairly well, though the holding power could be a bit better, any little catch will cause the work piece to fly right of the chuck. I am contemplating a couple of enhancements:

  1. Some kind of grip or handle that would allow me to get a ‘tighter squeeze’. The problem is that it would need to be done in such a way that it does not upset the balance of the chuck, and it also should not have any protruding edges which would increase the risk of injury (the chuck alone is scary enough when it turns at any speed).

  2. Use different feet, possibly a little bigger and softer so when they are tightened they would have a larger contact patch with the work piece.

But when being careful to take light cuts, this chuck is easy to use and has vastly improved the quality of my bowls bottoms!

3 Responses to “Longworth Chuck”

  1. Gerd’s Shop Notes » Blog Archive » Bocote Bowl Says:

    […] It measures about 5 inches across. The bottom was turned using my Longworth Chuck. The finish is a Mylands friction finish (if I remember correctly). […]

  2. Gerd’s Shop Notes » Blog Archive » Maple Platter 2nd Edition Says:

    […] So I chucked it up in my Longworth Chuck, cleaned it up a bit, and then buffed it with the Beall Buffing wheels. I really like to look at this piece of wood. It has some spalting, some quilting and even some curl in it. […]

  3. Gerd’s Shop Notes » Blog Archive » Various ways of chucking Says:

    […] Yours truly also got invited to show the Longworth Chuck. If you came to find out more about that chuck, click here to see my original post along with links to instructions. […]