Quote Originally Posted by routercnc View Post
Late to the thread but I’ve been using pc water cooling fluid for years and works fine. Lots on eBay such as EK-cryofuel.
Claim they are non toxic, don’t corrode wide range of metals, have anti fungicide etc.
Of course ! Why did I not think of that, when most of the components I have for spindle cooling are out of a water cooled computer.