Please allow me to jump in here with a slightly off topic question.
Shortly I will be carrying out some trials which will involve the
rotary tumbling of steel/brass clock parts using a jewellers steel
shot mix and soapy water solution. I'm told this will be a great
improvent on the dry tumbling method I'm presently using. My concern
is that of "flash rusting" and having seen the post below I wondered
what product could be use as an additive to prevent this happening.
It should be something that can be completely dried off and will not
leave any residue. Something being available in the UK would be nice