Coolant...Which and why?

[tool_man_tony]

Castrol MB-20 is being used in several machines in our shop. I bought a 320 gallon tote for about $4500. Once the machines are stabilizes at 4 to 6 on the refractometer, the coolant resists attaching itself to chips. I have added 350 gallons of water regularly between coolant refueling levels. Sump life has been great. Odor and bacteria are not a problem. Lubricity is excellent. Resistance to foaming is very good. Rust inhibitor works quite well. There is slight residual build-up and oxidation of aluminum at high concentricity levels. We are very please with the product.

[cali tool]

We use SPINDKOOL for our saw coolant, SPINDKOOL MIST for our mist units it cost $5 less than KOOLMIST, and finally we use SPINDKOOL CNC for cnc flood units less for under 50 psi.

[coolants]

If Green Procurement is your goal we market SoyClean, Oil Gator and Micro-Nice, biobased solutions, Coolants, machining or grinding synthetic, semi-synthetic and soluble oil coolants. We also supply a range of complimentary products such as maintenance cleaners, absorbents and wiping cloths. If anything is an issue or not clear please send an email to richard@richcatt.com or visit our website http://www.coolantsandcleaners.com

[JWB_Machining]

We use Hocut-795 MD. We haven't had any problems with it cooling or anything like that but we have hard water here and as a result the emulsion doens't seem to hold. After a day there's white "curds" on the walls of the sump and floating in it, not mold because it forms too fast and doesn't smell but probably have to get around to trying better quality water because the coolant just looks disgusting.

I don't know if they give a free sample out but I know Liquid Ice Coolant does. I called them after being annoyed with the Hocut and they sent me out a small sample. I mixed that up and it held with our water. It's odd looking because it mixes clear. The company is really nice, when I called them about the sample the guy on the phone even tried to help me trouble shoot my Hocut. Once I run out of the 5 gallons of Hocut I have I'm going to switch over to that, it's supposed to hold for a minimum of 6 months. I'd definitely shoot them a call if you or anyone on here is shopping around.