Roland Jollivet wrote: > While this thread is on the topic of coolants, I'd like to know from users > of bigger CNC machines if corrosion is a problem. > > While I understand that the modern coolant solutions have a fairly good bond > to the water, there are a myriad of pockets in a machine where water can > evaporate, then condense on an upper surface, This is obviously now pure > water, and soon causes rusting. So one might have a vice arrangement running > for a week on a repeat job, with flood cooling, and when you dismantle it > all, there is rust on underside parts of the vice. > I often leave the vise on my mill for months at a time. I occasionally get a black film under the vise or machine table, but it wipes off with a paper towel. I'm sure this is due to the performance of the Encool solution, and how the corrosion inhibitors wick and film over the metal to protect it.
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