[jimcarry]

The best test pieces for brush plating or selective plating are car emblems there easy to work with if you go to you local salvage yard and even ask them if you can have some broken emblems im sure they will let you take them for free .
When you get them use your stripper in reverse at 14 to 16 volts you will notice a yellow color this is the chrome being removed . Rinse the piece and use your nickel activator forward at 8 to 10 volts use plenty of solution do not let the prat dry. Rinse and proceed to plating .
After each rinse and before the piece drys check with water break test