[Moparmatty]

What is everyone's opinion on what is the best general pupose coolant for CNC machining? Mostly machining aluminum, CRS/HRS, 01, and D2.

[Kool Parts]

Moparmatty,
I had this recomended to me about 5 years ago. I love it. No bacteria, ever. Mixes very very easy, and has a decent smell. Wont knock you out of the shop. Almost all of our machining is on alum.
Gary



http://www.doallsawing.com/cutting_f...?mod_sku=KK777

[joe1970]

I am a huge fan of trim sol I get mine from j&l industrial supply no bacteria no nasty smell provides good capibalities for both turning and machining centers. Works well for tapping. I run alum. 1018 steel 4140, 8620 forgings, a-2 and d-2 coolant holds up well for all the best I have ever used!!

[little bubba]

I'm voting for Blaser Swisslube. You pretty much can't make this stuff stink, it actually smells pretty good. If for some reason you need to pull it out of a tank,because it miracuously starts to stink because somebody peed in it or is spitting tobacco, you stick it in a barrel for a couple months, suck the sludge off of the top and its pretty much good as new, we have two barrels out back, from over a year ago, that we've used in between new barrels, good as new, color is a little off, but abasolutely no smell. It does mix a little too well with tramp oils, so you need to skim it in the mornings after its settled and before it starts mixing.

[Moparmatty]

Thanks guys.

[DareBee]

As most people, I have tried many, Castrol Superedge 6759 is my vote.
Inexpensive "blue milk" type, never stinks but will thin out slightly as it evaps over a few months. Generally tanks need topped up long before thinning is an issue.