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?

Thanks

Dave

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

Hi Tim,

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

When the water evaporates it leaves a brown oil slick on the surface
that really does not mix back in very well so I skim that off. I
usually mix up a fresh gallon and pour it in the tank to make up the
level.

Using distilled water is a bit extreme though??? grin

Dave

"Dave, I can't do that" wrote in message
...
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?

Thanks

Dave

Is there a way to better seal the tank? My grinder has a 40 gal tank and I
don't get any evaporation but we have to add a preservative or it gets
stinky.

Is there a way to better seal the tank? *My grinder has a 40 gal tank and I
don't get any evaporation but we have to add a preservative or it gets
stinky.

Hmm, not really the tank is pretty well sealed in the machine base,
probably 30+ gallons. The evaporation must be happening on the table
as that's the only time the fluid is exposed. The table drains have
hoses that take it straight back to the sump. We almost never have
overflowing into the base tray.

As for stinky, try using a fish-tank bubble from a pet store. It
oxygenates the water and stops the bacteria stagnating. Have not had
to use "the pill" for years.

Dave

On Fri, 23 Jul 2010 13:13:41 -0700 (PDT), "Dave, I can't do that"
wrote:


Is there a way to better seal the tank? *My grinder has a 40 gal tank and I
don't get any evaporation but we have to add a preservative or it gets
stinky.

Hmm, not really the tank is pretty well sealed in the machine base,
probably 30+ gallons. The evaporation must be happening on the table
as that's the only time the fluid is exposed. The table drains have
hoses that take it straight back to the sump. We almost never have
overflowing into the base tray.

As for stinky, try using a fish-tank bubble from a pet store. It
oxygenates the water and stops the bacteria stagnating. Have not had
to use "the pill" for years.

Dave


Ayup. A cheap 110vt timer works great and you only need to run it about
3 hours a day in actuality. Timers are about $6 at Kmart etc etc if
that much.

Gunner

One could not be a successful Leftwinger without realizing that,
in contrast to the popular conception supported by newspapers
and mothers of Leftwingers, a goodly number of Leftwingers are
not only narrow-minded and dull, but also just stupid.
Gunner Asch

On 2010-07-23, Gunner Asch wrote:
On Fri, 23 Jul 2010 13:13:41 -0700 (PDT), "Dave, I can't do that"
wrote:


Is there a way to better seal the tank? ?My grinder has a 40 gal tank and I
don't get any evaporation but we have to add a preservative or it gets
stinky.

Hmm, not really the tank is pretty well sealed in the machine base,
probably 30+ gallons. The evaporation must be happening on the table
as that's the only time the fluid is exposed. The table drains have
hoses that take it straight back to the sump. We almost never have
overflowing into the base tray.

As for stinky, try using a fish-tank bubble from a pet store. It
oxygenates the water and stops the bacteria stagnating. Have not had
to use "the pill" for years.

Dave


Ayup. A cheap 110vt timer works great and you only need to run it about
3 hours a day in actuality. Timers are about $6 at Kmart etc etc if
that much.

Actually even 15 minutes per day solves the problem.

i