Machinist's ring - video

Machinist's ring. By Engineer BrunS. 5:08 video:

https://www.youtube.com/watch?v=bUurvD6OWD0


Previously:

https://www.homemadetools.net/forum/...911#post133620
https://www.homemadetools.net/forum/...960#post125012
https://www.homemadetools.net/forum/...240#post116051
https://www.homemadetools.net/forum/...900#post137414
https://www.homemadetools.net/forum/...4709#post80410

(Now that would definitely leave a mark — and cripple a hand too.)