-----Original Message-----
From: 7x12minilathe@...
[mailto:7x12minilathe@...]On Behalf Of John Kiely
Sent: Friday, November 09, 2012 6:46 AM
To: 7x12minilathe@...
Subject: Re: [7x12minilathe] Re: Pipe threading on a mini lathe ?
I don't think I would recommend this but has anyone tried offsetting the
headstock a fraction of a degree as can be done on older lathes?
My little mini has it's cowl removed now and it would be feasible to angle
your work to introduce a taper and then cut your threads.
It might be an awful pain to line it up again!
Just a thought
John Kiely
From: Roy <roylowenthal@...>
To: 7x12minilathe@...
Sent: Friday, November 9, 2012 2:59 AM
Subject: [7x12minilathe] Re: Pipe threading on a mini lathe ?
You need a taper attachment to cut a truly accurate tapered thread.
Considering their uses, that's almost an oxymoron! Without a taper
attachment, the work-around is to cut a stepped thread & refine it into a
tapered thread either by finishing it with a pipe die or lots of fiddling
with thread files.
Roy
--- In 7x12minilathe@..., "olduhfguy" <phbrush@...> wrote:
>
> I have seen a couple of articles on a taper turning attachment for a
mini lathe. It appears the makers are using it primarily to make Morse taper
shanks. Is this the only acceptable way to cut tapered (NPT) pipe threads ?
If that is the case I would be better off to stick with machines that are
designed to cut pipe threads, but I thought I would ask since the quality
that comes out of most threading machines leaves something to be desired by
machinists standards. Thanks !
>
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