Hi Charlie,

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One thing I might mention.? Almost from day 1 I've had a Shumatech DRO-350 and scales on the quill and X/Y axis. ?With a touch probe it's easy to find the center of a hole.?? Same with ensuring that an edge is parallel.? The Shumatech can even do hole patterns etc.? Guiding me to each new XY position before I bring the quill down to drill or mill.??

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So series of holes that start with the initial center drill, then tap drill, then clearance hole and finally counter bore where the tool is only changed once per set of holes is dirt simple with the Shumatech DRO. Not nearly as easy with scales and counting turns.? And even easier with CNC where you just program in the X,Y positions and still manually move the quill.?? Otherwise you have to have the tool # and length of each tool calibrated so the automatic drilling works properly.?

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If you haven't had a DRO then the CNC will be a wonderful addition.? If you have the DRO, then not as much depending on what you do.

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John

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