??? Ralph , you may want to think along the lines of using a
large dowel or the like to hang your chucks from . Threading
chucks on for storage seems like a awful lot of work .
animal
On 7/8/23 9:10 AM, Ralph Hulslander
wrote:
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Thanks Bill for explaining the stub spindle. That
or something similar is on the top of my list of things to do
when I get the AtomicELS or RELS running.
I need to do 3 or 4 of them to use as a chuck mount in my
new cabinet. I am going to mount the chucks on a sliding wall
for storage.
I "tried" grinding my original 3 jaw chuck, cannot say I
was very successful.
So I bought a 6" 6 jaw which?is really nice. Last month I
picked up a great old 3 jaw chuck at a Swap Meet.
Of course I also have a 4 jaw chuck. And of course a Back
Plate.
Ralph
Couple
of comments, but I have to admit I did not read all 98 replies
so I apologize in advance.
Most old 3 Jaw chucks are still pretty good.? My original 5"
Atlas chuck just had bell shaped jaws from wear and I ground
the jaws in a few hours with a small router.? That included
making a wooden router mount and blocks to pre-load the chuck
jaws.? It was not hard and the results were extremely good.?
For a bunch of different diameters I tested the runout was
about 0.003" or less which is pretty much all you can expect
from a typical 3-jaw chuck.? I bought a new Shars 6" chuck
with removable jaws and I only use it when I have to.? I still
prefer the 5" chuck.
Don't expect to remove and remount anything in a 3-jaw chuck
without checking it carefully with an indicator unless you can
live with the error.? Maybe you have the magic touch but I
don't.? If I need to do this I use a collet if I can.
Mounting a 3-jaw chuck in a 4-jaw chuck might make the 3-jaw
perfect but probably only at one diameter.? Also it puts you
further from the head-stock and you're starting with a pretty
big overhung load.? (If no one answered the stub spindle
question, it's a short threaded shaft that matches the lathe's
spindle that is long enough to screw into the 3-jaw chuck and
still long enough to mount in your 4-jaw chuck.?? Of course if
your 4-jaw chuck is big enough you could just mount the 3-jaw
chuck body in the jaws of the 4-jaw.)
When I am done cutting a thread I clean it up in the lathe
with a stainless steel wire brush.? It works wonders for
getting rid of the small imperfections.? For a right-hand
thread I generally run the lathe in reverse so the brush feeds
itself off the thread,?? I do this on aluminum too with a soft
stainless steel brush.? For a big thread you can clean it up
with a triangular file if you have to.
That's it.? Take it or leave it.
?
Jim
