On 17/7/17 10:11 am, Gene Heskett wrote:
On Sunday 16 July 2017 19:13:42 Trent Hejazi wrote:
That¹s another direction I want to try. Basically, a cat head riding
in a ball bearing that mounts in the steady rest.
Not familiar with the term "cat head", 'splain plz. Preferably with a
link to a pix?
https://books.google.com.au/books?id=aiEDAAAAMBAJ&pg=PA188&lpg=PA188&dq=lathe+cathead&source=bl&ots=Mh6nNIkCpP&sig=A13sgkeR26UX7tTvSDwuYa6JehA&hl=en&sa=X&ved=0ahUKEwjbzOncoo_VAhVGX5QKHUUfDA8Q6AEIZzAM#v=onepage&q=lathe%20cathead&f=false
This would allow me
to center a barrel by using the DTI inside a chamber or muzzle, where
I cannot otherwise take a skim cut while supporting on a center or run
it through the headstock. Should save some time and frustration.
Marshall
On 7/16/17, 6:00 PM, "Chris Albertson" <[email protected]>
wrote:
Why not ball bearings? Then there is no relative movement between
the rest
and the part.
As for friction of solid fingers
lowest friction is a lead/copper alloy, next best phosphor bronze.
Motor oil helps.
On Sat, Jul 15, 2017 at 7:00 PM, Trent Hejazi <[email protected]>
wrote:
I have brass contact fingers and they work well. When supporting
the barrel tennon, they ride on the threads without damaging them.
Otherwise,
they will always leave an annoying ring on a barrel. Only way to
circumvent is to make a collar to slip over barrel, then skim cut
concentric with the bore. Other option is to make a set of inboard
and outboard cat-heads so you can work near the head stock. This
really depends on the spindle bore dia and barrel dimensions you
are working with.
Marshall
On 7/15/17, 8:46 PM, "Gene Heskett" <[email protected]> wrote:
Greetings all;
My steady rest has steel sliders, which will not do for working on
finished parts. So I need to order a foot of 1/2x1" brass or
copper to make some more better shoes.
Which will do the least damage to a pre-finished part, such as the
fairly
high polished SS barrel? Brass or copper?
Thanks everybody.
Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>
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Chris Albertson
Redondo Beach, California
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Cheers, Gene Heskett
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