Gas forge. By The Workshop at Hidden Homestead. 7:08 video:
https://www.youtube.com/watch?v=PAGI-h36nmg
Previously:
https://www.homemadetools.net/forum/...206#post184719
https://www.homemadetools.net/forum/...057#post109427
https://www.homemadetools.net/forum/...472#post162243
https://www.homemadetools.net/forum/...650#post163062
https://www.homemadetools.net/forum/...403#post177436