On 07/21/2010 10:32 AM, Dave, I can't do that wrote:
Hi All,

I live in the AZ High Desert and it is very low humidity (a bit high
at 31% at the moment) all year round. I have to replenish the water/
oil mix regularly as the water evaporates out pretty quickly. I was
about to order some more soluble cutting oil and thought I would ask
here first.

I am wondering if a straight cutting oil like Mobil 404 would last
longer, maybe indefinitely. I mostly cut aluminum on mills and lathes
so do not want any staining after machining.

Anyone have some low-cost favorite cutting oils?

Do you have to replenish the water/oil, or do you just need to add
distilled water to replace what was lost?

--

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

Do you need to implement control loops in software?
"Applied Control Theory for Embedded Systems" was written for you.
See details at http://www.wescottdesign.com/actfes/actfes.html