I have bought a new rotary table (6" vertex with 3 slots),
where can I find plans on howto make an adaptor for a 3 jaw
chuck from my lathe to fit my rotary table?
Or altenately buy an adaptor?
You're not likely to find "plans" for this
If I needed an adapter plate, I would measure my existing rotary table,
measure the chuck to be used, and sketch the adapter using those dimensions.
Proceed to shop. Get dirty. Make mistakes. Learn from said mistakes. Rinse.
Repeat as necessary.
When I needed one, I just used one of the dummy spindle end replicas
I'd made of my 9" South Bend's spindle nose when I was making chuck
backplates. Made up a locking bar to fit the table's T-slots, cut a
slot in the end of the replica for the bar, turned it down to fit the
table's recess, bored a hole lengthwise for a big Allen bolt in the
thing and tapped another in the bar and I was done. Took all of an
afternoon, most of it on the shaper cutting the slot for the locking
bar. Locking bar was just a chunk of hot-rolled construction scrap my
dad had dragged home. If you've got a cam-lock mount on the lathe,
it's gonna get a lot more involved!
I needed one of these and made one up by trial and error from an old brake
disc I had lying around.
Clean up disc faces in lathe, remove backplate from chuck,
Machine disk bore (where it fitted on hub) to fit a register I found on
Drill disc to suit tapped fixing holes in rear of chuck and bolt up.
Drill holes in friction area of disc to match T-slots in table - oversize to
permit some movement for centring.
Oviously doesn't self-centre but I centre it with a dial gauge - on the
work-piece, to overcome chuck errors
Crude, but it's served me well for a long time.