You could get some adhesive back foam, or trim molding like used on car doors to stick. Lots of products on
http://mcmaster.com page 3256. If you use some of their weatherstrip adhesive in addition to the self stick on the trim molding, it is pretty rugged, but it's not the "flush" look you want, I take it.
Can your friend maching a nice profile on a strip of black delrin, and countersink some screws or pop rivet to the inside edges???