Not as easy on a manual machine but I used to remove small broken taps on a CNC machine using a 4 flute carbide end mill with no coolant and spun it up pretty fast, and did a .010 peck, it took awhile but worked great. Yeah ruins the end mill but worked.
I'd go with Jerry's fix, good idea cast iron pipe plug.

Kicking self for selling off my Taskforce trucks.
Still looking for an LCF or conventional big bolt in decent shape.


As of 10-26-2022, A 55.2 Taskforce long bed now the work begins