18th century German armorer's shaping stake.
https://s3-us-west-1.amazonaws.com/h...e_fullsize.jpg
Previously:
https://www.homemadetools.net/forum/...008#post176059
https://www.homemadetools.net/forum/...339#post173186
https://www.homemadetools.net/forum/...547#post174020
https://www.homemadetools.net/forum/...911#post164123
https://www.homemadetools.net/forum/...204#post161264