Most of us who have read the old Machinist publications have probably seen mention of Lard Oil and "Lard Mineral Oil" as a cutting fluid recommended for steel. I've been curious about it for a long time, and so I decided to educational purposes to try it out. Yes, I'm sure its much better to...
I've been using Tap Magic as a cutting oil besides for tapping. I've been watching "This Old Tony" and he seems to be using a much thicker cutting oil.
What does everyone use?
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