In article ,
Gunner Asch wrote:

On Mon, 07 Apr 2008 22:16:46 -0400, Joseph Gwinn
wrote:

In article ,
Gunner Asch wrote:

On Sun, 06 Apr 2008 21:43:27 -0400, Joseph Gwinn
wrote:


[snip]

I use a water-oil emulsion for cutting, and I worried that the water
would turn the paper into mush. Maybe the paper needs to be soaked in
way oil first.

It won't turn into mush when its clamped under the tool holder.

I was also thinking of using electrical "fishpaper" (vulcanized fiber)
in place of the legal paper. Fishpaper is *very* strong. Fish are not
involved; I have no idea where the name came from.

I've also been thinking that the paper might benefit from being sealed
with shellac. Application would be by dipping in shellac diluted with
alcohol.

Try the yellow paper. Ill send you a dollar to buy a pad at the 99c
store. G

The issue is that I don't want to have to keep replacing the "gasket",
mainly because it may become a nuisance when everything is coated with
baby blue emulsion.

You won't have to replace it very often.

I will see how it goes in my shop.


And learn to sharpen/setup/line up your cutting tools better. A cut
shouldn't take all that much pressure to accomplish unless they are
dull, or you are feeding way too fast

It was not quite razor sharp, but it wasn't dull either. But it won't
hurt to sharpen it.

I suspect the real problem (aside from the toolpost rotating) was that
I
was simply pushing too hard, as I learn the feel of cutting off. This
is the part that must be learned by using the lathe, that cannot be
learned by reading books.

Joe Gwinn

Good thinking and sorta echoed my own thoughts. It takes time to get
a feel, or read the recommended speeds and feeds and set your travel
accordingly.

I tend to make blue chips..push harder than most might, but I know my
machines, my tooling.

Well, I've been managing pale yellow to brown chips mostly, and did
manage blue while doing roughing-cut experiments. This while using
brushed-on black sulfur oil. But since I started using the sprayed
water-oil emulsion, things have been boringly cool, and all chips are
shiney. But the emulsion is baby blue.

Joe Gwinn


Black sulpher oil works good for pipe threading using dies, but not so
great for lathe work. You have to thin it out a bit.

And the best thinner is carbon tetrachloride, with trichloroethylene a
close second?

No idea.
I use only oil in the lathe, but proper lathe cutting oil, usually
high sulfur, but much thinner. When I run low, I ask a customer for
a few gallons.

I was kind of pulling your leg. Good luck getting either solvent,
although they would work well. And you would be *very* happy from the
solvent fumes. Till you passed out.

What kind of oil do you use, by make and model?

Joe Gwinn