Quote:
Originally Posted by sharpiel
Great pic. You could even rig the grinder on a mechanical arm to generate the required curve.
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I've seen one like that. The mirror was mounted vertical and the arm was horizontal and they made a pass, wound it in a bit and made a second pass.
When I made mine there was a lot of flexure, I needed 2 pieces of wood, one either side. If the arm was horizontal it would have to be braced to stop the arm sagging.