Burnishing Fluid

[Fellhoelter]

Anybody use burnishing fluid in their tumblers?

I have been less than happy with my vibratory results lately, and I remember a company I worked at used some specialty fluid in their tumblers.

I've been looking at McMaster, and it's pretty high dollar stuff.

If you use it, what do you use?

What difference does it make?

 

[Nathan the Machinist]

I use a water soluble cutting oil diluted 10:1 with water. It prevents the media from loading up and improves cut rate and surface finish.