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Posted by Trevor Jones on February 9, 2008, 1:53 pm
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steamer wrote:
> --Wow that's a good price; if I were you I'd snag it! I've got one
> and yes I do use it for production on occasion. This, plus the collet closer
> and you're in business in a small way. Yes, the bottom lever engages a
> locking pin to position each face; the lever on top tightens the
> turret once moved.
> --The only problem with the turret is the size of the chuck mounting
> holes; maybe 5/8", IIRC. I had to make some strange 'interface' pieces to
> get mine to a state of usefulness. Here's a link to a few photos:
> http://www.nmpproducts.com/wbapril07.htm
>
5/8" shank is a common size for the small second op lathes, such as
from Hardinge and the like. Pretty common, but prices vary from
giveaway, to very dear, with little found in the middle range, from what
I have found. Lots of box tools and hollow mills, tooling collets and
die heads available in 5/8" shank.
The site poses the question of a better idea for the depth stop. Look
at the multi carriage stops used on many turret equipped lathes. Rotate
the stop position, to match the turret position, and yer cookin' with gas!
http://www.lathes.co.uk/schaublin/img34.gif is the best picture of the
concept I can find at short motice.
Here is another variation
http://www.clausing-industrial.com/Products/Lathes/Metosa/std/4posbedstop.jpg
Beat to heck, or chinese mikes, bought on sale, are pretty good donors
for adjustable micrometer stops, too.
Cheers
Trevor Jones
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Posted by David Littlewood on February 9, 2008, 1:56 pm
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> --Wow that's a good price; if I were you I'd snag it! I've got one
>and yes I do use it for production on occasion. This, plus the collet closer
>and you're in business in a small way. Yes, the bottom lever engages a
>locking pin to position each face; the lever on top tightens the
>turret once moved.
> --The only problem with the turret is the size of the chuck mounting
>holes; maybe 5/8", IIRC. I had to make some strange 'interface' pieces to
>get mine to a state of usefulness. Here's a link to a few photos:
>http://www.nmpproducts.com/wbapril07.htm
>
Interesting site, Ed. As to the "whatchamacallit" of December 05 (a
retracting screwcutting tool), have you seen the GHT design? Hemingway
market a kit for it (I have had the kit for over a decade, but not got
made it yet) and for a more sophisticated retracting topslide.
David
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David Littlewood
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Posted by Jazzman99 on February 10, 2008, 8:46 pm
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Thanks for your answers, folks.
The "whatchamacallit" (retracting screwcutting tool) seems like a neat
gadget to make. This seems to release very quickly.
--
Jazzman99
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Posted by Chris Edwards on February 11, 2008, 4:38 am
Please log in for more thread options On Sun, 10 Feb 2008 19:46:31 -0600, Jazzman99
>
>Thanks for your answers, folks.
>
>The "whatchamacallit" (retracting screwcutting tool) seems like a neat
>gadget to make. This seems to release very quickly.
I made one of these a few years ago and, on the whole, I find it
very useful. However, key to it's effectiveness lies in the strength and
'snappiness' of the coiled compression spring fitted within the body and
which effects withdrawal. Although it does work, I have yet to find a
spring, in these small sizes, which can move the mass of the top slide very
smartly, to remove the tool from engagement as briskly as I would like.. I
also fitted George Thomas' topslide locking lever at the same time. I find
this essential as the 'unlocked' retracting topslide has a tendency to
'vibrate' more than I would like.
YMMV
--
Chris Edwards (in deepest Dorset) "....there *must* be an easier way!"
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> and yes I do use it for production on occasion. This, plus the collet closer
> and you're in business in a small way. Yes, the bottom lever engages a
> locking pin to position each face; the lever on top tightens the
> turret once moved.
> --The only problem with the turret is the size of the chuck mounting
> holes; maybe 5/8", IIRC. I had to make some strange 'interface' pieces to
> get mine to a state of usefulness. Here's a link to a few photos:
> http://www.nmpproducts.com/wbapril07.htm
>