NIK Sigma-7 light aircraft.
https://diqn32j8nouaz.cloudfront.net...t_fullsize.jpg
Previously:
https://www.homemadetools.net/forum/...327#post181244
https://www.homemadetools.net/forum/...943#post175713
https://www.homemadetools.net/forum/...378#post131383
https://www.homemadetools.net/forum/...019#post176091
https://www.homemadetools.net/forum/...273#post169249
