Now having used it on some AK washes, Vallejo Air that had been sitting around for at least a year. It does work although not as quick as I would like, but many times quicker than shaking them myself. Yes tried the ball balling trick and that isn't 100% either . The enamel wash took longer to mix than the water based acrylic. Over all not absolutely sure about it yet, probably great if you don't let any of them sit too long and the result would be better. So maybe I'm asking a bit much....more trials needed I think.
