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  1. #1
    us
    Anita

    Apr 2012
    New Hampshire & Maine
    V3i, Excalibur II, White's M6, Coinmaster
    1,141
    334 times
    All Types Of Treasure Hunting

    Help! Tumbled coins turned black/dull

    Been using the rock tumbler/aquarium gravel/dish soap method of cleaning coins. I separate out the clad and the copper and clean them separately from one another. My question is this, the first batch of clad I cleaned came out silver colored and shiny. Subsequent batches are coming out dull gray/black. Pennies are coming out black (separate from clad). I use plain Dawn dish washing liquid (no bleach and not anti-bacterial), natural rock gravel and warm water. Dirt and crud coming off, but coins look awful. Could I be overloading tumbler? Any suggestions on how to avoid this in the future? Will those coins clean up better if I run them again? Thanks for your help.

  2. #2
    us
    I deal in reality

    Mar 2010
    Maryland
    XLT , surfmaster PI , HAYS 2Box , VIBRA-TECTOR
    8,264
    2314 times
    Name:  hand print-2_edited-3.jpg
Views: 290
Size:  39.7 KBTry laundry detergent. It is made to cut dirt" water base" , Dish washing soap is made to cut grease. Also use fresh gravel each time.

  3. #3
    us
    Anita

    Apr 2012
    New Hampshire & Maine
    V3i, Excalibur II, White's M6, Coinmaster
    1,141
    334 times
    All Types Of Treasure Hunting
    Thanks. Will try this on the next batch.

 

 

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