Rounding hammer. By Glen GS Tongs. 7:52 video. Previously:
https://www.youtube.com/watch?v=cHBufoRa_Eg
Previously:
https://www.homemadetools.net/forum/...379#post173346
https://www.homemadetools.net/forum/...304#post165745
https://www.homemadetools.net/forum/...204#post161264
https://www.homemadetools.net/forum/...425#post146796
https://www.homemadetools.net/forum/...911#post164123