Wearing a polishing plate - GIF

[Jon]

I do not know why you would want to show this to your students unless its a how not to do things lesson.

I think you're right about this, and it's actually going to be an unusually comprehensive how not to do things lesson. Gloves around rotating equipment, strangle risk, impaling risk, even right down to the fuzzy dangling knot end right in front of the grinder.