I have had a Shapeoko Pro XXL for a little over a year with the spindle probably a little less than a year. This morning I noticed that the spindle is not getting to the requested RPM (18k) and is slowing done during the cut. The cut is not deep at all. 1/4 o-flute cutting .125 in epoxy slows down a lot 1/16 o-flute cutting .125 in two pass slows down as well. The VFD display is showing 12180 before the cut starts and goes down to 9500 or so with the 1/4 bit. Any thoughts? I will call Carbide support when I get a lunch break today.
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