Plating chrome (aka copper, then nickel, then chrome) builds up around .002 thick at max after all 3 layers are plated on to the part. Its not that thick, you have nothing to worry about. Checking most case specs you'll see they allow around .008 in dimensional allowances, thats pretty hefty and you should have no problems getting anything to fit. Plating can be done on just about any surface, plastic, fabrics (kids shoes, think people) flowers, and so many other things, just have to make the material you want to plate conductive, and to do that you apply a conductive solution that would make the part conductive.