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Date

09-04-2008

Posted by Peter Fairbrother on September 5, 2008, 8:16 pm

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Mark Rand wrote:

> wrote:
>

>> Austin Shackles wrote:

>>> On or around Thu, 04 Sep 2008 23:46:53 +0100, Mark Rand
>>>
>>>>
>>>>> I have a very old ML7 no gear box, no cross feed, no coolant. I am

thinking

>>>>> of changing it but with what ? About same size but with gear box and cross
>>>>> feed, also would like to take bigger cuts. Any suggestions welcome
>>>>>
>>>> In order of likelyhood:-
>>>>
>>>> Boxford AUD
>>>> Colchester Student
>>>> Colchester Bantam
>>>> Super 7B with cross feed
>>>> Conny Sewer
>>>> Hardinge HLV(-H if you can get it))
>>> Harrison L5?
>>>
>>> Colchester Chipmaster, if you can find a good'un, especially if the variator
>>> works. In fact, unless it's been rebuilt with a variable speed motor, it's
>>> essential that the variator works. very nice little lathe though, if in
>>> working order.
>>>
>>> The student is a bit big, compared with a Myford.

>> They are *all* a bit big compared with a Myford. A Myford will fit
>> comfortably on a tabletop - the rest won't.
>>
>> -- Peter Fairbrother

>
>
> My sense of proportion might by slightly skewed by the fact that I migrated
> from my short bed ML7 to ex-father's long bed 7B (that he claimed to have
> bought for my 9th birthday :).
>
> Having fitted it to a stand, the other lathes _are_ bigger than it. But not
> necessarily vastly so.
>
> Case in point. The long bed ML7B is 24"x55" on its stand, the Hardinge HLV is
> 8" longer and 5" deeper. The reason for suggesting the "upgrade" is that the
> Myford weight in at 5cwt and the HLV tips the scales at half a long ton.
> Similarly with other "small industrial" lathes. That weight difference can
> make a big difference to the amount of swarf that you can produce in an
> evening.

Nyah nyah nyah - of course I want a HLV-H, and I'd make room for one at
a shot, but I can't afford more than a grand or so - which is unlikely.
How many do you have now?

sad and jealous :)

BTW, do you still have any of that 95 mm dia black EN24T left? Can I buy
150 mm from you?

>
> If one were really stuck on the concept of small enough to live on the table,
> then a gearbox and power crossfeed would be gilding the lily and wouldn't fit
> the last desire to take bigger cuts.

Yuss.

-- Peter Fairbrother

Posted by Mark Rand on September 5, 2008, 8:25 pm

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wrote:

>Mark Rand wrote:

>> Case in point. The long bed ML7B is 24"x55" on its stand, the Hardinge HLV is
>> 8" longer and 5" deeper. The reason for suggesting the "upgrade" is that the
>> Myford weight in at 5cwt and the HLV tips the scales at half a long ton.
>> Similarly with other "small industrial" lathes. That weight difference can
>> make a big difference to the amount of swarf that you can produce in an
>> evening.

>
>Nyah nyah nyah - of course I want a HLV-H, and I'd make room for one at
>a shot, but I can't afford more than a grand or so - which is unlikely.
>How many do you have now?

It's only an HLV and it cost me about £250 (plus two years so far rebuilding
it without seeing it run yet...)

>
> sad and jealous :)
>
>BTW, do you still have any of that 95 mm dia black EN24T left? Can I buy
>150 mm from you?
>
>

Still got some, but it's not EN24T, just EN24 i.e. Black and annealed. Doesn't
machine as nicely as the heat treated EN24T, but doesn't affect the final
result if it needs heat treating afterwards.

I'll get a length in the post for Monday if you want.

Mark Rand
RTFM

Posted by on September 6, 2008, 6:47 am

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Snipped Interesting Stuff

> It's only an HLV and it cost me about =A3250 (plus two years so far rebui=

lding

> it without seeing it run yet...)
>
> Mark Rand
> RTFM

Mark, in reading your comment here I thought it must be at least 4 or
5 months since our last update on Dovetail grinding etc as related to
"just an HLV". Have you made progress or indeed finished the bed re-
build? Apologies if I have missed an update but family diversions make
my forum access irregular at the moment. I am always on the lookout
for such a machine (at a similar price :-)) but even if I fell over
one at the moment I would lack the confidence that it can be "sorted"
without spending something a fortune.

Regards

Keith (interested but impoverished of Wales)

Posted by Charles Ping on September 6, 2008, 12:59 pm

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On Sat, 6 Sep 2008 03:47:17 -0700 (PDT), jontom_1uk@hotmail.com wrote:

>Snipped Interesting Stuff
>

>> It's only an HLV and it cost me about £250 (plus two years so far rebuilding
>> it without seeing it run yet...)
>>
>> Mark Rand
>> RTFM

>
>Mark, in reading your comment here I thought it must be at least 4 or
>5 months since our last update on Dovetail grinding etc as related to
>"just an HLV". Have you made progress or indeed finished the bed re-
>build? Apologies if I have missed an update but family diversions make
>my forum access irregular at the moment. I am always on the lookout
>for such a machine (at a similar price :-)) but even if I fell over
>one at the moment I would lack the confidence that it can be "sorted"
>without spending something a fortune.
>
>Regards
>
>Keith (interested but impoverished of Wales)

Keith

One of the big benefits of a Hardinge is that the bed ways are
removable and therefore easily taken off for regrinding. The fact that
Mark chose to do it the hard way with an undersize surface grinder
shouldn't put you off!

Charles

http://www.homeworkshop.org.uk

Posted by on September 6, 2008, 2:16 pm

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wrote:

> On Sat, 6 Sep 2008 03:47:17 -0700 (PDT), jontom_...@hotmail.com wrote:
>

> >Snipped Interesting Stuff

> >> It's only an HLV and it cost me about =A3250 (plus two years so far re=

building

> >> it without seeing it run yet...)

> >> Mark Rand
> >> RTFM

> >Mark, in reading your comment here I thought it must be at least 4 or
> >5 months since our last update on Dovetail grinding etc as related to
> >"just an HLV". Have you made progress or indeed finished the bed re-
> >build? Apologies if I have missed an update but family diversions make
> >my forum access irregular at the moment. I am always on the lookout
> >for such a machine (at a similar price :-)) but even if I fell over
> >one at the moment I would lack the confidence that it can be "sorted"
> >without spending something a fortune.

> >Regards

> >Keith (interested but impoverished of Wales)

>
> Keith
>
> One of the big benefits of a Hardinge is that the bed ways are
> removable and therefore easily taken off for regrinding. The fact that
> Mark chose to do it the hard way with an undersize surface grinder
> shouldn't put you off!
>
> Charles
>
> http://www.homeworkshop.org.uk- Hide quoted text -
>
> - Show quoted text -

Thanks Charles, I had forgotten that Mark chose the "advanced route"
for his rebuild. I think that there was an issue with regard to the
alignment of the dovetails being different from the alignment of bed
location dowels so I was interested in how the bed once removed was
aligned for grinding the dovetails given that they were obviously worn
and wouldn't provide a datum. The problem I have is there are few
local grinders with a machine large enough who will "fiddle about with
these one off jobs" and even if they do they will only do exactly as
they are told with no guarantee of accuracy, except for parallelism.

Not that I have found a suitable machine candidate yet you understand,
but I have (clears throat), found an HLV in the corner of a workshop
that looks very unloved and "well worn" - at least that was what I
told the guy who runs the place. :-) He just happened to mention that
they could well be moving early in the New Year and was moaning that
the scrap price might not hold up long enough for them to get anything
for it once they are able to get it out. I did say that I might well
be able to pay a bit more than that and clear it for free when the two
bloody great CNCs that currently lock it in are moved. I will have to
keep tabs on the place but don't at the moment want to appear too
interested and haven't even looked close enough to see exactly which
model it is. No, for anyone wondering, I can=92t seem to remember
exactly where the place is :-)

Regards

Keith

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