[modeleng] Re: Mystery Thread & New Loco

Al

The 1000 rpm top speed was the suggesion of the lathe manufacturers - not
the speed used by me!    On cutting very short screws in times past, I used
to turn the lathe by hand, to avoid 'sweating marbles'!     Because the
Hardinge has a positive stop, I now do these under power, but still at a
modest speed - this is easier on the nerves!!

Cheers!   Hubert

----- Original Message -----
From: "Allen Messer" <al_messer@xxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Tuesday, August 15, 2006 1:27 AM
Subject: [modeleng] Re: Mystery Thread & New Loco


> Screwcut at 1,000 rpms?  No way for me!  I'm not that
> experienced!  I always use bottom back gear and then I
> sweat marbles until the job is finished.
>
> Al Messer
>
> --- Shep <shep.28@xxxxxxxxxxxx> wrote:
>
> > Barrie
> >
> > I find the easiet way to screw-cut is to stop the
> > lathe at the end of the
> > cut, withdraw the tool, and reverse the lathe - in
> > this way whatever the
> > thread, it is always on track.
> >
> > I bought an ancient Hardinge last year, and with
> > this lathe, screwcutting at
> > speed is a doddle!    You can thread up to a
> > shoulder, and the lathe will
> > stop.
> > The topslide has a device for withdrawing, and the
> > reverse on the
> > screwcutting does not lose the track   Hardinge
> > suggest that you do not
> > screwcut above 1000 rpm!
> >
> > Cheers!   Hubert
> >
>


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