Hi, Guys -
This is a very informative thread on wet tumbling that I find interesting and helpful.
A couple of observations/comments, stemming from my experience, to add to the wet tumbling/auto wash and wax discussion:
Yes, I concur that using the auto wash and wax impedes the return of tarnish to the brass. I've been wet tumbling this way for nearly 4 years with stellar results. So, this has been a result in my wet tumbling experience at least.
But, reading all of the various responses by folks when the auto wash and wax issue is discussed, I somehow get the impression, either rightly or wrongly, that some (certainly not all) may think that using auto wash and wax for wet tumbling leaves a discernable wax coating on the brass that can be felt or perhaps even scraped off. Not at all being critical in any way, as this is just an impression I get from reading various and sundry comments from some others.
However, in my experience in using auto wash and wax for wet tumbling brass, there really is no discernable wax that can be felt or even seen on the surface of the brass. In fact, right after tumbling and being taken out of the tumbler and rinsed, brass tumbled in wash and wax looks and feels exactly like brass wet tumbled in dishwashing liquid - at least mine does. The difference is the time and tarnish factor - the wash and wax impedes the return of tarnish whereas tarnish returns much quicker after tumbling in dishwashing liquid. Both clean the brass superbly and impeccably, however. I'm lead to think, not being a chemist so I don't know scientifically, and don't pretend to know, that the residual wax left on the brass from wet tumbling with auto wash and wax, is perhaps on an extremely thin coating scale (molecular or microscopic perhaps?).
In fact, the very slight residual case lube/sizing wax that may be left on a casing after sizing, even after being wiped with a rag, is more discernable than brass having been wet tumbled in auto wash and wax. Certainly to me, at least. And, in my experience as well, if a case is sized using case lube/sizing wax, and the case wiped with a rag, there's an ever so slight residual case lube film remaining on the surface that will likewise impede the return of tarnish at least as good as the auto wash and wax, if not moreso. (I don't tumble cases just to remove case lube, as I know many reloaders choose to do).
So, these are a few of my observations and experiences in using auto wash and wax for wet tumbling cases.........All in all, I've gotten very good results.
Thanks, Guys, and Happy Tumbling -
Bayou