To those reloaders who use a wash & wax in an ultrasonic machine, how much do you use? Teaspoon? Tablespoon?
I don't use anything but cleaning solution in my U.S.
Then a quick rinse in water*.
Then an quick rinse in Armor All W & W mixed w/water.*
*One thing I've found that seems to work well for me is (2) 5 gallon buckets and a 2 (or 2.5?) gallon "KILZ" bucket with a bunch of holes drilled in the bottom.
Brass coming out of the US goes into the 2 gallon bucket and stays there throughout the rinse and then wax processes.
First, a couple swooshes in a fiver with about 2 gallons of rinse water in it, a brief drip dry, then a soak in the 2nd fiver w/ about 2 gallons of 'wax' solution in it for 5 -10- 30 minutes (Doesn't seem to make much difference how long) Noticeably less effort required to size 9mm afterwards
But,,,, I've already been jaded by the finished appearance of wet tumbled brass vs that of brass 'mostly' cleaned w/ US.
So, instead of using the W+W
in the tumbler w/ the pins*, I now apply the wax as a final step using the same 'soak' method described above.
(*You wouldn't fill a bucket with filthy black water, add some AA W & W to it and wash your car with it, would you?)
Granted, it's way too much hassle* to set all this up for 1 little batch of brass, but when you have 'several thousand cases worth' of tumbling ahead of ya, it ain't as bad as it sounds.
(*You can always leave the rinse/wax solutions in the bucket(s) with a lid on top for storage. I seldom change the wax solution. Just add a bit more AA W & W)
As always, YMMV