|Project by QuarterSawn||posted 12-29-2012 07:38 PM||9403 views||47 times favorited||15 comments|
I wish I would have built one of these years ago. It would have saved a ton of frustration and some seriously destroyed projects. On my second attempt, I think I mastered the Longworth Chuck. The first one was “okay”, but had some wobble that made it annoying and it just wasn’t true enough for precise work. On my second at bat, I nailed it and learned some important lessons worth passing on to any turners that care to venture onward:
1. Use expensive or “solid” plywood, preferably Baltic birch but something without voids. Believe it or not, even the smallest void will render your chuck out of balance.
2. RTFM, or more politically correct, follow the instructions (I used those linked from a project posted by fellow Lumberjock “thedane”). You must cut your circles, screw them together, mount a faceplate, turn them true and then mark your true center. Then mark your circles and arcs and from there and you are golden.
My second attempt runs so true it almost brings a tear to my eye. Now I can pitch my worthless Cole jaws that never seemed to quite fit whatever I was attempting to reverse chuck. I haven’t lost a single piece from the Longworth chuck and I can’t count how many flew (or wiggled) off the Cole jaws.