How granite curling stones are made. 2:50 video.
https://www.youtube.com/watch?v=xlLf6LnJYNc
Previously:
https://www.homemadetools.net/forum/...380#post200434
https://www.homemadetools.net/forum/...220#post116000
https://www.homemadetools.net/forum/...778#post198195
https://www.homemadetools.net/forum/...243#post141908
https://www.homemadetools.net/forum/...416#post135448
