Chisel made from wrench. By not2fast4u2c. 7:09 video:
https://www.youtube.com/watch?v=oWpkGDogx0M
Previously:
https://www.homemadetools.net/forum/...987#post168121
https://www.homemadetools.net/forum/...755#post159731
https://www.homemadetools.net/forum/...256#post154088
