Hello Folks,
Got to thoroughly connect the perimeter of a circuit board with an aluminum panel, one screw every inch and so on, for good EMI performance mostly of the internal kind. In the good old days that was simple, nickel plating of the PCB perimeter and nickel plating of the aluminum. It even looked really posh. The FR-4 is a no-brainer but are there any road blocks with aluminum nickel plating such as stricter EPA rules or other new regs?
Reason I ask is that I had run into this in the past, where suddenly a process became hard or prohibitively expensive to contract out inside the US because of some new rule.