Hi Richard,
Welcome to the club.
Don't start filing anything just yet! It's too hard to put all the
little filings back. Gotta be pretty sure that's what you need to do
before getting drastic.
Firstly, I assume you're talking the regular (Sieg style) Chinese
7x12 here? If so, the tailstock has an MT2 taper. So how did you
chuck the centre? It won't sit well in any parallel jawed chuck.
What's the wobble look like if you stick something known to be
cylindrical in there? Say a short water pipe offcut - or a bit of
round bar when your metal arrives.
Even a Philips head screw driver for now. At least they are usually
pretty parallel down to the tip - not like the straight screwdrivers
that have a forged bulge.
Also, remove the chuck (3 awkward nuts at the back of the chuck) and
check all is clean in the recess where the chuck sits on the flange.
I'll bet the flange runs true. Does the chuck face?
John
--- In 7x12minilathe@..., Richard Stevens
<rtjstevens@...> wrote:
Hi, ignorant newbie here; just bought a new 7x12 lathe but as yet
tooling
and metal not arrived -but my dial test indicator has...
I decided to place the Centre from the tailstock into the
headstock chuck
and test. It's a long way out and is visible by the naked eye
alone -
perhaps by 0.5 -10.8mm. Yes I've taken the centre out and
repositioned it
-but still the same.
What's the best advice? (All I could think was to take out the
(numbered)
chuck jaws/teeth and to gently file down as appropriate)
Many thanks,
Richard
