This is "as close as makes no never mind" true representation of a rounded wingtip, constructed using full-scale practices by Charlie Richards.
The wing tip bow is as seen a single piece, with only two smaller ribs needed to continue the shape, and two struts to maintain the bow under the pressure of the covering.
All the ribs are hand-layed up, with each gusset.. the compression strut is to scale..
A marvelous piece of work.
For the flying version, Charlie did most of it the same way, but of sturdier material.
This one is slowly disintegrating over the years..