"RST Engineering" wrote in message ...
:I tend to use small or large rotary devices that I can let run for hours or
: days if needs be. If the turnbuckles are small, the little "rock polishers"
: from Harbor Freight are good with whatever abrasive/solventive media you
: wish in with the parts.
:
: If the turnbuckles are large, a **clean** cement mixer withOUT the internal
: stirring paddles and the holes blocked with botch buttons along with the
: media work just fine.
:
: The abrasive media of choice here for that sort of crap is "playground sand"
: from Home Depot. It is very fine and clean, but you may wish to research
: other less invasive media. Pistons and valves come out sparkling clean with
: this media but you've got to figure out how to get ALL the remaining sand
: off of the part ... generally a solvent soak followed by an air blast
: followed by another solvent soak.
:
:
: Jim
:

Corn cob media works real well
check out: http://www.shorinternational.com/TumblingMedia.htm