My goal was to make it look like the MR V2 clampcard:
Here's one on my MKVI. I also shaved is super thin, so I could use it for touch plate activation (needs to flex)
Here's the other side of the other one... the rounded thick traces.
to do it... I had to use a tiny amount of solder on the tip of the iron. I masked off the thick traces, and lightly traced them with the tip. Then used soldering brad to remove the excess and thin it out.