Re: Stainless tubing

Hi Smoke,

The 0.75 OD is needed to be used as an extention of the part in the
clamping of the machine. I am using two drills on the part, 7 inches
apart as a function of the proximity of the quills.

The bore is clearance for a 1/4 rod used to expand a bushing to hold
the part by the inside bore of the part which is also a 3/4 tube. so
I do need 0.75 for the whole length, and the ID is not important as
long as it can have enough strength to hold the part, not flex, and
allow a 1/4 rod to move freely.

Since I only have a 9x20 lathe, I am limited to the length I can
turn, which pushes me back to getting higher quality stock to start
with.

on the topic of gun barrels, (my project is not firearms related) I
have yet to find a gun barrel that imporves my aim or steadyness.
Seems that what I have been shooting is typically more accurate than
I am. Besides, a 1 group from a rest at 100 yards will always be
good enough for a deer for me.

Dave

--- In CAD_CAM_EDM_DRO@y..., "Smoke" <smoke@t...> wrote:
> Sounds like the thru hole is just to reduce weight. I do see where
a piece
> of tubing would help. You don't really need to turn 10" of
length. Just
> turn the space between the bearings. That would only be about 6"
(18-10-2
> =6). Turning the OD for the bearings and relieving a few thou.
between
> the lands could all be done between centers in one setup in about 10
> minutes.
>
>
> Smoke,
> > I thought of that, but the thought of spending
> > an hour drilling a 2 ft lenght just was too much.
>
> > but, I need to locate one bearing in the center, and one on one
end,
> > with a 10 inch projection. That means turing almost a foot of
the OD.
> >
> > Since I'm just a little busy or lazy (depending on whom you talk
to)
> > I'd probably send it out to get center ground for a perfect
finish.
> >
> > Dave