Uploaded October 2013 | Updated September 2026, 2 weeks ago

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I just share some thoughts on the grinding tool and show a bit of grinding. I also, set the camera on the mirror to see how the tool moves with respect to the mirror's frame of reference. I'm using "W" strokes, starting in the center then to one side, all the way to the other and back to the center. I try to always begin a set of strokes by offsetting the mirror towards the side from where the mirror came back to the center in the last set of strokes.