On Thu, 19 Sep 2013 13:07:56 -0400, Ed Huntress wrote:

On Thu, 19 Sep 2013 08:49:21 -0700 (PDT), PCS
wrote:

On Thursday, September 19, 2013 9:00:34 AM UTC-4, Karl Townsend wrote:

Thanks for the carbide lead. A push button was in my (super cheapo)

price range.





I'm going to modify a turret plate with a 1.375 square by real long

gundrill tool holder. Drill 12", back up and stop. Loosen holder,

slide ahead, restart drilling. I'd use a manual lathe but the hardinge

has a nice flood coolant setup and complete enclosure.



Karl

Ahhh, very clever that.

I would think your push bar problem is less about compression and more
about bowing.

It's so constrained by the bore that there would be no significant
bowing.

Certainly once it's well in -- but if those things work the way I think
they do, getting it started would be critical.

Of course, I'm just extrapolating from the term -- I haven't even hunted
up a YouTube video of the process.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com