Originally Posted by
100
We use valcool vnt-700 at a 6% ratio to water. Enco sells this product under the name Oakflow-700. ...
I had a different experiance with this stuff when they subed the valcoolt vnt700 we did use with the Oakflow 700. It was sticky, discolored brass, soaked into delrin discoloring it , foamed and went rancid so fast it was scary. It is the only coolant we had go rancid in the TM-1s and in the Mazak it didn't last long either. I was constantly having to add water to it to bring it back to dilution too. I'm using the Cimstar 540 right now with good results. It dries with a thin coating that isn't paticularly tacky, rinses quickly back into dilution, no discoloration on the plastics and non-ferrous materials we cut. $89 for a 5gal pail at MSC and dilutes at 5-10%.
Suppose you were an idiot and suppose you were a member of Congress. But I repeat myself.
Mark Twain