[aeroknot]

magnetic "pinning" board -
This will work well. I bought two 22 G steel sheets and a bunch of whatever magnets were available. Can always use more magnets.

I will sand the rib length for the leading edge and trailing edge for a tight fit.

Edit - on the tip panel outside tip, cut all outer edge parts straight with the straight outer tip edge of the plan, and round off later, just before gluing the panels together.