longworth chuck

[splinter]

I always ran into the problem of trying to hold finished parts without screws or marks from a chuck i came across this longworth chuck design it works good and simple to make i used cam clamps instead of wing nuts to tighten holds well at low rpm and light work next project to make one for my rotary. splinter

[glenn]

Hi Splinter,
Nice chuck, how do you center your workpiece?
Thanks,
Glenn

[splinter]

GLENN, THER IS A HOLE IN CENTER I HAVE A 1/4 PIN IN FROM THE BACK AS THE TWO PLATES ARE TRUNED THE RUBBER STOPPERS SLIDE IN THE GROVE AND CENTERS IT SELF THEN I FLIP THE CAM CLAMPS AND IT TIGHTENS. SPLINTER;