How I made my Doughnut Chuck

Problem: I wanted to make a Retirement Clock. I started off glueing up an 8 segment ring that measured 12” in Diameter with a hole in the center big enough for the clock face. (6.75”). Once the glue had dried, how do you hold it on the lathe?


My Solution: After posting my problem on Woodturners Unlimited (, it was suggested that I use a Doughnut Chuck! Well, I had never heard of such a thing so some research was in order. I found out that it was nothing more than a circular shaped clamping devise.

Material List:

  1.   Backing Plate. I needed a plate that was large enough for my Lathe (16” in Diameter). My old Rockwell/Delta 46-612 has a notch bed so I can push it to 16” over the notch. I found a nice sheet of Aluminum 1/4” thick 16” x16”.  I was able to cut a nice circle with my Jigsaw. Then I attached it to my 6” Faceplate.
  2. Material to make rings out of. I used 5/8 plywood.
  3. Bolts (8) I used 1/4 20 TPI 3” long Carriage Bolts with Thumb wing nuts.
  4. Bolts to attach backing plate to the faceplate. I used 6mm x 10mm Counter sunk screws.  Drilled and taped holes in the Aluminum Plate. 

Method:  I was able to mark the center on the Al. plate and drill a small hole so my Radius Jig for my Jigsaw would fit in it. I cut a nice 16” diameter plate. I them marked up the plate with radius rings every 1/2” as guilds for mounting pieces on it. I also marked Horizontal and Vertical lines through the center as well as at 45° so I could set out the 8 holes around the outer circumference for the clamping bolts. I was also able to center up the faceplate on the Backing plate so I could mark mounting bolts to attached the faceplate to the backing plate. On the 15” ring I marked and drilled 8 holes for the clamping bolts.


Conclusion: As you can see, this devise does the job very well. I have made two more clocks so far, one more to go. I have made one of Black Ash, one of Red Oak, one of Jack Pine and I am working on one more made of Tamarac (Larch). I can see this unit being used for all kinds of projects like this.

© Rocky Roost Wood Turning. -- All rights reserved. All information presented on this site is copyrighted by Rocky Roost Wood Turning except where otherwise noted. No portion of this site may be copied without express written consent. Other sites are invited to link to any aspect of this site provided that all content is presented in its original form and is not placed within another frame.