We're working on a jatoba entry door that has an unusual, custom made door handle. The handle is made from 1/2" plate aluminum cut on a CNC. The inside and outside pieces bolt to each other through the door, with spacers on each side. The deadbolt is separate. That's the easy part.
The hard part is finishing the handles. We are sanding in stages going up to 800 wet to achieve a polished look, which is no problem. We are having problems finding a finish to protect the polished look our customer is after. I know I can send these out for dipping but prefer to keep them in-house if possible. We are open to any finish supplier, but typically use SW products. Does anyone have any thoughts?
From contributor C:
Matthews acrylic polyurethane is an outstanding exterior metal coating. Another one that I like is Akzo-Nobel Chromatic. Both of these stay water clear for a very long time. Sherwin Williams makes clear Polane which has an amber color in the can, but would probably work ok.