r fine wire is employed it may be foundnecessary to build the frame with two spars. Bothof course should be as near stream-line form asthe construction will permit and placed above theribs. With the metal frame planes a trailing knifeedge is never used, the head resistance of thewire being so small… … it firmly with the pliers and bend back and forthat gradually decreasing angles until it breaksoff short. The use of a soldering iron has beenfound to be but a clumsy and crude method ofjoining the wire and it has been superseded bythe alcohol lamp. In fastening the wire thejoint is simply held…
Aeronautics
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