Decades ago when I worked in the aluminum extrusion business, one of the jobs that I had was running the saws to cut the extrusions. Very fine (lots of) teeth carbide, and as you said, plenty of lubrication. On aluminum, we actually mixed oil and water, the pumps mixing it milky white. We added more oil as the iron content in the aluminum increased from 6064 towards 6061 in not just the saws, but other machinings as well. The point was to use plenty of non-stop lubricant to protect the blades as well as not melt the aluminum, which would then gum up and heat the blades. Plenty of lubricant.
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Today's Featured Article - A Lifetime of Farm Machinery - by Joe Michaels. I am a mechanical engineer by profession, specializing in powerplant work. I worked as a machinist and engine erector, with time spent overseas. I have always had a love for machinery, and an appreciation for farming and farm machinery. I was born and raised in Brooklyn, New York. Not a place one would associate with farms or farm machinery. I credit my parents for instilling a lot of good values, a respect for learning, a knowledge of various skills and a little knowledge of farming in me, amo
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