I didn't give my thoughts above on ultrasonic or not. I've tried many methods of cleaning including:
Next up will be cleaning similarly dirty chips together (because mine were mixed some were just surface dust and some had decades of gunk) AND
if they're not clean enough just let them go longer.
Even if a 45 minute soak is necessary if the result is a clean chip with no damage and no manual interaction per chip I think that's the winning method for me.
--DC
- fakeTSP in ultrasonic per this thread
- simple green soaks with occasional agitation per @cpac54
- ...and then manual cleaning with power scrubber of the worst chips
- oxy clean soaks with occasional agitation per @PokerSTLplayer
- ...and then manual cleaning with power scrubber of the worst chips
- dawn soaks with occasional agitation and manual cleaning with power scrubber @itilthard
- Nothing is perfect as in fast, cheap, 100% effective, non damaging and requiring little interaction per chip.
- The long soaks will break down and remove the gunky boogers that are on the surface of dirty chips.
- Nothing but manual intervention per consistently release dirt that's below the surface of the chip, as in deep into the recessed text of a house mold.
- ...so far. I'm also told that if the chips aren't clean let them soak and agitate longer in oxy clean or simple green and try again.
Next up will be cleaning similarly dirty chips together (because mine were mixed some were just surface dust and some had decades of gunk) AND
if they're not clean enough just let them go longer.
Even if a 45 minute soak is necessary if the result is a clean chip with no damage and no manual interaction per chip I think that's the winning method for me.
--DC