Schaeffer honing oil

[Nightraider]

I've been using Rigid Dark with ATF mix but recently was turned onto the Schaeffer Honing oil and was curious if anyone has used it for threading or chambering. It's a high sulphur threading/ cutting oil, I would imagine like Rigid Dark.

 

[Dusty Stevens]

I have always liked the dark sulphur oils myself

 

[Walt Krafft]

When I got a new lathe last fall for fitting barrels, I looked at alternatives to the stinky Sulphur oils. Regular coolants tend to go rancid and probably would not have the lubricity for chambering. After talking to several companies, I tried Castrol Syntilo 9974. It is sold as a gun drilling coolant. It is a full synthetic water soluble fluid. Basically clear and odor free. I use a 10% concentration and it is working great chambering barrels with through barrel coolant, threading, and general cutting. I could not be happier. And, did I mention it is clean and doesn't stink?

 

[Gappmast]

Sunnen sells a honing oil MB40 that works great for chambering and threading. It has surfer, animal fats, and chlorine. I don't have a flush system so I paint it on the part and never have any loading and chambers don't need polishing.