How cutting discs are made.
<video controls autoplay loop> <source src="https://s3-us-west-1.amazonaws.com/hmt-forum/how_cutting_wheels_made.mp4" type="video/mp4"> Your browser does not support the video tag. </video>
Previously:
https://www.homemadetools.net/forum/...076#post160768
https://www.homemadetools.net/forum/...009#post137775
https://www.homemadetools.net/forum/...372#post131334