Black powder/residue/stuff on silver models

Discussion in 'Finishing Techniques' started by DavidMulder, Dec 24, 2012.

  1. DavidMulder
    DavidMulder New Member
    Ok, just wondering, on my model there was a lot of black stuff/residue/powder I had to scrape of with a knife.


    Although I already finished my model, I would really love to know what it was? And whether scraping it off with a knife was the right way to go, or whether there are any better methods?
  2. BillBedford
    BillBedford New Member
    It's likely polish....

    Remove it in an ultrasonic bath.
  3. GlenG
    GlenG New Member
    If it is polishing compound , soak parts in 50/50 mix of household ammonia and water then use a soft toothbrush and all should be fine.