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toolposts and live centers


Richard Kleinhenz
 

When you mount a (fairly standard, from HF) live center in the tailstock, and have a small diameter workpiece, how do you arrange your tooling to be able to turn it? I have a TS Eng. QC toolpost. The large body of the live center prevents me to get close enough with the tool. If I extend the tool out, naturally it just flexes. I use a 5/16" indexable tool from LMS, the cheapie version. The workpiece is 3/8" or 1/2" steel rod. I think I read if you have more the 2-3 diameters extending from the chuck, you need to support the end. So anything over an inch or so needs support.

Do I need to use a different tool holder for this type of work?
t
--
Regards,
Rich
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Richard Kleinhenz
mailto:woodnpen@...


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William A Williams
 

There is something to be said for a large tool bit (1/2" in our case)
clamped to the top slide in the British style with a rocker style clamp
and a stack of shims on the other side! Room and rigidity.

Bill in Boulder "Engineering as an Art Form!"


 

Use a dead center or a high-bucks live center that doesn't have a
large diameter bearing housing. With a carbide tipped dead center,
it doesn't take much pressure to steady the work. A follow rest also
works, but can be a nuisance to use.

Roy
--- In 7x12minilathe@..., Richard Kleinhenz
<woodnpen@o...> wrote:
When you mount a (fairly standard, from HF) live center in the
tailstock, and have a small diameter workpiece, how do you arrange
your tooling to be able to turn it? I have a TS Eng. QC toolpost.
The large body of the live center prevents me to get close enough
with the tool. If I extend the tool out, naturally it just flexes.
I use a 5/16" indexable tool from LMS, the cheapie version. The
workpiece is 3/8" or 1/2" steel rod. I think I read if you have more
the 2-3 diameters extending from the chuck, you need to support the
end. So anything over an inch or so needs support.

Do I need to use a different tool holder for this type of work?
t
--
Regards,
Rich
========================================
Richard Kleinhenz
mailto:woodnpen@o...


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Richard Kleinhenz
 

Aw shucks... why didn't I think of that? That dead center was probably grinning at me all along! Thanks

* REPLY SEPARATOR *

On 5/4/2003 at 4:18 AM roylowenthal wrote:

Use a dead center or a high-bucks live center that doesn't have a
large diameter bearing housing. With a carbide tipped dead center,
it doesn't take much pressure to steady the work. A follow rest also
works, but can be a nuisance to use.

--
Regards,
Rich
========================================
Richard Kleinhenz
mailto:woodnpen@...


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