Soluble v straight cutting oil in low humidity

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

Hi Tim,

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???

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.

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

Gunner

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Actually even 15 minutes per day solves the problem.