1" left of thumb center,it moved alot like the one in the vid.I was prety happy but my pro shop guy said I would like the drill on the second one better,he was right.the only problem I had with the first one was it needed plenty of oil,pin below grip.the pin above the grips worked better for me.I also like the 4000 vrs.2000 grit.
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"one should not increase,beyond what is necessary,the number of entities required to explain anything"