Hi There,
The 10K has a special secondary taper machined into
the spindle. This allows the 10K to use 6K collets
directly in the spindle without an adapter. These
collets are unique and are not interchangable with
the 3C collets.
The 3C's are smaller and have smaller threads on
the end. Therefore, the draw bars do not
interchange.
The smaller 9" lathes have a Morse Taper #3 spindle
taper. They use an adapter in the spindle to allow
the 3C collets to be used.
But, it is possible to use 3C collets in the 10K.
The 10K spindle taper is a modified Morse Taper
#3 and will accept Morse Taper #3 tooling. So,
If you get the same set-up the 9" lathe used
(draw bar, adapter and collets), you can use it
in the 10K.
As mentioned, 3C collets are restricted on size.
SBL only offered 3C collets up to 1/2" (except pot
collets). Some after market makers offer them up
to 9/16". SBL offered 6K collets up to 5/8" and
some other makers offered them up to 11/16" (I
think).
If you want more capacity, then a collet chuck would
be the way to go. Bison chucks are good. Jacobson
chucks are nice too but both are pricey. Another
possibility would be to make one from a kit. Metal
Lathe Accessories offer such a kit but it is a bit
advanced as projects go:
Metal Lathe Accessories
Just someting to think about. Good Luck!
-Blue Chips-
Webb