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leeminardi
en respuesta a: Anonymous

There is no apparent reason why the spline is converted to a polyline.  As others have pointed out an arc would have been a better solution.  Perhaps the author wanted to show a few new functions (blend and convert to polyline).  The pedit command can be used to join arcs and lines together to form one object (a polyline).  pedit will not accept splines so perhaps this was on the mind of the author. I also considered that perhaps the author had some need not to have a spline in the gear tooth profile in anticipation for some later tutorial but I could find no evidence of that.  The main purpose of the tutorial was to show the use of polar array.  This was done very well.  I would have liked to see a real gear tooth profile (an involute curve) used instead but that is beyond the goal of the lesson.

lee.minardi