Hot cut chisel. By Daniel Moss. 13:00 video:
https://www.youtube.com/watch?v=YHiiClLbt0s
Previously:
https://www.homemadetools.net/forum/...596#post170410
https://www.homemadetools.net/forum/...257#post154089
https://www.homemadetools.net/forum/...998#post153128
https://www.homemadetools.net/forum/...863#post152543
