[KCV6]

I assume that you are brush plating (not that it really matters). There are masking agents that you paint over the parts you don't want plated that you peel off after plating.

I've used a hobby product called Masksol (on zinc plting only). It is used for masking plastic and metal model parts before spraying with model paints. It is a pink colour so you can see it as it is applied and after it has dried. It is basically liquid latex so don't get it on the bits you want plated. Stays wet just long enough to paint it on. I believe others have used nail polish removed with acetone (nail polish remover) after plating.

TRY THESE METHODS ON TEST PIECES FIRST. I'm 99% sure it will do the job, however that leaves Murphy a 1% chance of screwing things up. And please post back here the results so others can benefit from your success (failure).

Cheers Mark