Using the 3/0 blade in a jeweler's saw all of the excess sheet goods is trimmed away. I left about 1mm of material all around the part. If you would trim it flush the solder joint will shrink away during subsequent soldering operations making the joint apparent.

Next the floor for the bezel was added. It is a bit of a fussy job since three different tapers are involved in getting a good fit. After soldering the floor in place again with hard solder the open side was flatten as described in a previous step.