Jun 28, 2008 · A quick poll of experiences in drilling holes in metal. We have a new shop foreman (in his twenties) who thinks that using sae 30 motor oil is OK to use as a cooling lubricant …

Aug 18, 2013 · For drilling or hand-tapping holes in steel, nothing beats good old high-sulfur (aka Bar & Chain) dark oil. Believe it or not, sulfur is the enemy of metal but it works to our …

Apr 17, 2025 · You'll need some damn good bits and some good cutting oil. In a Project Farm test from 4 years ago, only Tap Magic and CRC-3400 did well in the AR 400 armor plate drilling …

Dec 18, 2017 · I don't know what I need, if anything. I have read about flood coolant systems for lathes, and I know there is a difference between coolant and cutting fluid. My question is do I …

Feb 19, 2022 · With all my searching I have determined that there is no better oil can then the Reilang oil can. But is it really that much better? I was also looking at the Goldenrod oil can …

Dec 26, 2017 · I made some bronze bushings from C932 and I don't have a lot of experience with this material. Initial turning was straightforward enough, it came off not as curly swarf but kind …

Jan 31, 2018 · Threading oil from hardware store, should have sulfur in it. Home Depot stuff works fine if you have one nearby. Mobil makes a good sulfur cutting oil also, available in gallon jugs.

Oct 7, 2024 · Hi everyone, I’m new to maintaining a metal lathe and would appreciate your advice on which oils and greases to use for different parts of (metal) late machines, and why. …

Jan 7, 2023 · So after 3 broken bolts, I am ready to accept being wrong, and hopefully there is some penetrating oil that would work helping me remove the rest of the bolts, and figure out …

Feb 21, 2021 · Welcome aboard! i would consider drilling through to create oil passage would be a good thing. you may wish to make plugs for the holes so you can keep grit intake to a …