Best Coolant for Aluminium

[Clawsie Machine]

just getting geared up for some large production run on CNC mill for 6061 Aluminium. With that, I would like to know what the general accepted best coolant for milling, drilling and tapping is?

Please respond with name, manufacturer and part # if you could please. I have used Milicron Cimcool and Fastenal Sharpcool synthetic BLUE. What else would you guys recommend?

Thanks, John

[Mitsui Seiki]

Castrol SW3505 works well.We use it for all our materials.From aluminum to hardened parts.

[Clawsie Machine]

Thanks, will look at it, John

[wms]

John,

I've never heard of Castrol SW3505..might be a European thing..

We use Castrol Clearedge 6519..with good results..

[Mitsui Seiki]

Yes, maybe it is. I don't know.
It is oil based and you mix it with water up to something like 6-8%.
It works ,I know that.

[Coolant Guy]

Does your mill have high pressure coolant? And how high does it go? You would be better to run a water-miscible oil for Aluminum, if you want the best finishes possible. I work for Blaser Swisslube and I would recommend that you look at two products; Blasocut 2000 Universal, or BC20SW for high pressure. Both of these products are available at your nearest Blaser dealer. Blasocut 2000 Universal can be mixed with city water (depending on the quality) and BC20SW would be better mixed with R.O. or D.I. water. Please feel free to visit us at www.blaser.com

Best regards,
Coolant Guy.