Ice fishing drill auger adapter. By Minor Experiments. 6:17 video:
https://www.youtube.com/watch?v=BaRjKmronMw
Previously:
https://www.homemadetools.net/forum/...563#post147418
https://www.homemadetools.net/forum/...161#post157656
https://www.homemadetools.net/forum/...774#post143965
https://www.homemadetools.net/forum/...705#post139905
https://www.homemadetools.net/forum/...018#post137833