Oh snap.
Well normally I used .25" mdf, tack it onto the side of the enclosure, flush trim it, then put a small roundover on it.
Take them off, wrap them, then attatch them to the enclosure with some Silicone II using clamps or tape to hold them in place for 12 hours to cure. Once done, it's a clean look with no visible seems.
I have also used 1/8" before, but it's rather fragile.
nG