Harrison M300 Taper Turner

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Subject Author Date
Harrison M300 Taper Turner Geoffrey Johnson 05-12-2008
Posted by Geoffrey Johnson on May 12, 2008, 7:07 am
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I recently obtained a pukka taper turning attachment for my M300. It
looks as good as new and came complete with the bed clamp and tie bar.
These parts are often missing from previous offerings I’ve seen (usually
on eBay).
However attempts to mount it on the lathe came to nought when I eventually
realised that the device needs an entirely different cross slide feed
screw assembly. The feed screw for the taper turner is a `special’. It’s
telescopic – in two parts. The permanently connected taper turner
prevents fore and aft movement of the screw portion. On a non-taper
machine it’s coupled to the saddle. By this means you don’t need to
disconnect the feed-nut to use the device.
Harrisons are looking for £675 to put a new screw assembly and feed-nut on
my doormat!
Does anybody know more about this subject? More usefully does any good
soul know of a cheaper source of parts?



Posted by IEB on May 13, 2008, 5:26 am
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On Mon, 12 May 2008 12:07:58 +0000, postmaster@johnsonlb.plus.net(Geoffrey
Johnson) scribed thus...:

> I recently obtained a pukka taper turning attachment for my M300
....snippity snip......
Harrisons are looking
> for £675 to put a new screw assembly and feed-nut on my doormat!
> ....does any good
> soul know of a cheaper source of parts?


Have you tried such as G and M Tools.... certainly not 'cheap' but well
worth a try. I've been getting good secondhand Harrison stuff off them
for about 12 years now... a bit steepish on pricing .. but IMHO good
service and well worth a shout.

Ian

Posted by Geoffrey Johnson on May 14, 2008, 6:50 am
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IEB wrote:

> On Mon, 12 May 2008 12:07:58 +0000, postmaster@johnsonlb.plus.net(Geoffrey
> Johnson) scribed thus...:

> > I recently obtained a pukka taper turning attachment for my M300
> .....snippity snip......
> Harrisons are looking
> > for £675 to put a new screw assembly and feed-nut on my doormat!
> > ....does any good
> > soul know of a cheaper source of parts?


> Have you tried such as G and M Tools.... certainly not 'cheap' but well
> worth a try. I've been getting good secondhand Harrison stuff off them
> for about 12 years now... a bit steepish on pricing .. but IMHO good
> service and well worth a shout.

> Ian

Thanks Ian, I've just tried that one. Most helpful as you suggested and
knew the problem soon as I spoke.
I had similarly asked around several used kit suppliers at Harrogate last
week to no avail.
I'm looking for the leadscrew parts that are sitting quietly snoozing in a
box or drawer somewhere!

Geoff


Posted by Andrew Mawson on May 14, 2008, 12:52 pm
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> IEB wrote:
>
> > On Mon, 12 May 2008 12:07:58 +0000,
postmaster@johnsonlb.plus.net(Geoffrey
> > Johnson) scribed thus...:
>
> > > I recently obtained a pukka taper turning attachment for my M300
> > .....snippity snip......
> > Harrisons are looking
> > > for £675 to put a new screw assembly and feed-nut on my
doormat!
> > > ....does any good
> > > soul know of a cheaper source of parts?
>
>
> > Have you tried such as G and M Tools.... certainly not 'cheap' but
well
> > worth a try. I've been getting good secondhand Harrison stuff
off them
> > for about 12 years now... a bit steepish on pricing .. but IMHO
good
> > service and well worth a shout.
>
> > Ian
>
> Thanks Ian, I've just tried that one. Most helpful as you suggested
and
> knew the problem soon as I spoke.
> I had similarly asked around several used kit suppliers at Harrogate
last
> week to no avail.
> I'm looking for the leadscrew parts that are sitting quietly
snoozing in a
> box or drawer somewhere!
>
> Geoff
>

If you know the spec you could cut out the middle man, as it was
almost certainly made by the Halifax Rack & Screw Co

AWEM


Posted by Peter A Forbes on May 14, 2008, 1:58 pm
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On Wed, 14 May 2008 17:52:45 +0100, "Andrew Mawson"

>If you know the spec you could cut out the middle man, as it was
>almost certainly made by the Halifax Rack & Screw Co
>
>AWEM

Kingston Engineering in Hull used to do lengths of various types of leadscrew
for you to finish off. Haven't dealt with them for a long time, worth checking.

Peter
--
Peter & Rita Forbes
Email: diesel@easynet.co.uk
http://www.oldengine.org/members/diesel
http://www.stationary-engine.co.uk
http://www.oldengine.co.uk

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