Pottz - Thanks, I think so, too.   It won't be long before I'll need to work out just what I'm doing with the underside of the shell.   Some combination of cleaning, sanding, and spraying.

Ty - I used this jig-making technique on earlier projects, and it works well for creating a single jig for mirror-image parts.  I don't glue-in the dowels so that I can push them out to re-use on future jigs.  Regarding the scraps - yes, it is kind of nostalgic to use offcuts from other projects, assuming that I'm able to remember where they came from.  😄