The facilities manager of our factory just transferred ownership of a new 55 gallon drum of veggie oil to me. It's not food grade oil, we used to use it as coolant in the CNC lathes and mills.
http://news.thomasnet.com/fullstory/489267
The used coolant wouldn't have been much use, it would have been full of brass and aluminum dust that would have been very difficult to filter out.
http://news.thomasnet.com/fullstory/489267
The used coolant wouldn't have been much use, it would have been full of brass and aluminum dust that would have been very difficult to filter out.
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