Regarding cutting and tapping oils/fluids...

[Dabbler]

I've had a lot of people remark on my home made cutting fluids... On the topic of what is a great cutting fluid for steel, it is hard to beat the following video.

'Project Farm' is a channel that features an engineer that concocts the simplest and most effective ways to demonstrate one thing ro another. He does a lot of product testing these days...

 

[Bofobo]

PF for the win.

 

[Crankit]

Haha...I've got one of his videos paused while i finish watching the news.

 

[Tom Kitta]

I already watched it - what is important to note is that the best cutting oils were not thin but quite thick - I suggested to PF to test the white soluble cutting oil with different concentrations and in a band saw. Maybe he can figure out whatever there is some magic concentration that works the best & whatever it actually helps (and by how much).

Also of note is that *anything* is better then nothing.