I bought a new 10" chuck at the January 2006 Cabin Fever show up in
York, PA, it is stamped "Made in England"- perhaps a
Pratt-Bernerd. Either way its not rusty nor are the jaws loose
like my old chuck. It took a couple months to buy a couple
unmachined backplates on which to mount the chuck.
But first I have to machine the backplate (unfortunately I lost the
pics of machining the spindle bore... bummer). Here I'm starting
to face the mounted backplate.
The plate is approx 8" OD, I have to face off about .192 from the
outside 1.5" or so, leaving a 5" diam boss onto which the chuck is
mounted. Makes lots of chips and I got a lot of experience
fooling around with feeds and DOC.
But eventually I got it cut- I wanted size-on-size, but a burr misled
me so I ended up with a running fit... good enough for a first try I
And onto the spindle we go;
Naturally none of my chuck wrenches fit, so off to enco to get some that are sort of close-
they don't fit either, so now to anneal, machine & grind one into submission...