I need help for my combo CU
I use this product to protect the AMP : HG protection for copper: http://en.fr.hg.eu/products/show/id/1212/silver__copper___brass_polish_no_more_finish
and now I have seen that it doesn't look nice, and I want to completely remove it. they said to use acetone to remove it but I have tried and can't remove it.
can you help me please ?