Compass from pliers. By Creative Tool Mistry. 5:23 video:
https://www.youtube.com/watch?v=EInYxkFvufs
Previously:
https://www.homemadetools.net/forum/...164#post165264
https://www.homemadetools.net/forum/...207#post157829
https://www.homemadetools.net/forum/...941#post144734