Getting smooth curves:

Since Pantograph is working from a faceted model, you’ll never get true smooth splines (believe me, I’ve been trying to figure out how to do that!).  With some quick work in Inkscape, you can vastly improve things.

smooth_curves1.png

After ungrouping the drawing (Shift-Ctrl-G), you will be able to select individual polylines

smooth_curves2.png

Hit Ctrl-L (“Simplify Path”) until you are satisfied  with the smoothness of the curve.  If there are multiple overlapping linesyou may need to smooth both.

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