One day there may be on Earth a hang glider employing spider silk as its dominant material for frame and sail.
This topic invites the study and discussion of matters that may bring such hang glider to be.
I place "hang glider made dominantly of spider silk" into public domain via this industry strong forum at the US Hawks forum; anyone may use such technology to build personal hang gliders; commerce may make free use of the technology without attribution or need for any license.

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http://www.kraiglabs.com/spider-silk/ wrote:Yet the production of spider silk in commercial quantities holds the potential of a life-saving ballistic resistant material, which is lighter, thinner, more flexible, and tougher than steel. Other applications of spider silk include use as structural material and for any application in which light weight and high strength are required.