3D Contour of the image is not very sharp

After completing the Ruff and Finish I notice the contour of my 3D Image is not as clean as I would like. I tried decreasing the stepover for the Finish Pass cutting this value in half from 1.587 to .793. It’s better but is there anything else you might suggest that I can do to clean up the contour of this image.
flying horse.c2d (93.0 KB)

I noticed you declared a #102 square endmill for the finish pass in CC, is this what you are actually using?
Finish passes on 3D curves like that are better done with a ballnose endmill (for example #101), or even better a tapered endmill like this one:


The advantage of those tapered endmills is that they are sturdier than a straight ballnose endmill, so you can run the finish pass much faster.

If this does not help, you could reduce the stepover further (0.8mm is still a relatively “large” value if you want fine details)

You could also add a second 3D finish toolpath but oriented vertically (angle parameter set to 90°). Running both the horizontal and then vertical finish passes sometimes provide a smoother look (only if you use a very small stepover too)

Of course all of this amounts to more cutting time, it’s a compromise.
For your case I would:

  • get a tapered endmill
  • run the finish pass faster and at a lower stepover

A combination of these tips got me this example I like (two finish passes at 0 and 90°, 0.2mm stepover):


(full story here)


Thanks for your input I will try the various option you suggested

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