Willard Custer demonstrates his Custer Channel Wing.
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More: https://en.wikipedia.org/wiki/Custer_Channel_Wing
Previously:
https://www.homemadetools.net/forum/...406#post154622
https://www.homemadetools.net/forum/...147#post134516
https://www.homemadetools.net/forum/...118#post125923
https://www.homemadetools.net/forum/...657#post136540
https://www.homemadetools.net/forum/...833#post140345
https://www.homemadetools.net/forum/...250#post138563
https://www.homemadetools.net/forum/...301#post126898
https://www.homemadetools.net/forum/...213#post126424