I tried an old Lard Oil recipe for cutting steel....

[benmychree]

Real lard oil is liquid at room temperatures, it is not the same thing as lard. I have a small can of it and have tried it out as a cutting oil and was not impressed by it; best is TapMagic.

 

[benmychree]

Black sulfurized oil is fine for threading pipe, but stains whatever it touches, clear cutting oil is fine for most work, but nowhere near as effective as TapMagic.

 

[Charles scozzari]

Hi, when I worked, we in the elevator industry drilled and tapped all day long. The go to lube was the can of Crisco, and if it wasn't handy as gross as it sound saliva was the next best lube. Charlie.

 

[Mitch Alsup]

a) Thanks for doing the experiment and showing your results.

b) pedantically: you ruined the experiment by using a USED acid brush

c) I am left wonder what a ½ teaspoon of Sulphur would do when added to the ho mixture.

 

[Batmanacw]

Black sulfurized oil is fine for threading pipe, but stains whatever it touches, clear cutting oil is fine for most work, but nowhere near as effective as TapMagic.

Tap magic kills my lungs and leaves a nasty black tar all over everything of you don't clean it off quickly.

The sulpheurized dark cutting oil doesn't leave nasty goo. Cleans up very easily. It also doesn't bother my lungs. I use an exhaust fan with any oils I work with.

 

[woodchucker]

a) Thanks for doing the experiment and showing your results.

b) pedantically: you ruined the experiment by using a USED acid brush

c) I am left wonder what a ½ teaspoon of Sulphur would do when added to the ho mixture.

It would smell like sulphur aka fart gas..

 

[woodchucker]

Tap magic kills my lungs and leaves a nasty black tar all over everything of you don't clean it off quickly.

The sulpheurized dark cutting oil doesn't leave nasty goo. Cleans up very easily. It also doesn't bother my lungs. I use an exhaust fan with any oils I work with.

What tap magic, I use the EX and for AL and neither leave black tar.. And neither bothers my lungs. They have a few different formulas.. curious which.

 

[Batmanacw]

What tap magic, I use the EX and for AL and neither leave black tar.. And neither bothers my lungs. They have a few different formulas.. curious which.

The Pro I think. I threw the remainder away. I have some in a spray can that I use occasionally when not in the shop.

The aluminum version does not leave tar, smells nice, still kills my lungs....lol

 

[Charles scozzari]

I've been using WD40 for a while now. I bought a gal. can and brush it on as needed. It's light but I'm getting by with it. I also have been using Oatey brand pipe cutting oil and it's OK for what I do. I may be wrong but think Tap Magic, for me is in my case best for alum.

 

[woodchucker]

I've been using WD40 for a while now. I bought a gal. can and brush it on as needed. It's light but I'm getting by with it. I also have been using Oatey brand pipe cutting oil and it's OK for what I do. I may be wrong but think Tap Magic, for me is in my case best for alum.

I use TapMagic and Mobil 777 or 77 can't remember... I like both. I use the AL for AL sometimes. I use WD40 for AL a lot. It just depends what I'm cutting. I do like the smell of the AL.... but I find it evaporates in whatever I put it in.

I am curious about the chip formation that @HiltzVW mentioned. I have had situations where it has been difficult to get a chip going. And if I knew what he had b4 the chip with tap oil, it might help make the lard a go to when I can't get a chip. But I need to know what he was getting before it with HSS. so I can compare to my chip.