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I am trying to 3D surface mill the radius around the part, but my tool isn't going to the outer edges of the geometry. If you run a 3D simulation, you can see that my machined radius does not extent to the outer edge of the radius on the model (see screenshots). How do I "expand" my toolpath to the correct lines?
¡Resuelto! Ir a solución.
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It appears to be a problem with the original toolpath.
For some reason .. the surfaces were not highlighting correctly...so
I have recreated a toolpath based upon your original... Just double check the start and finish heights
I also reduced the step down to .001"
This will help reduce the height of the scallop left at the top.
Does that help at all?
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Hi,
I created some example toolpaths, in z level toolpath i changed the boundary and z limit and than i create 2 other example of "between curves" toolpath.
The first with the down curve 3D and the second with the down curve 2D, thanks to this strategy you can manage the parametric Z step.
Please have a look.

Gabriele Esposito
Sr Technical Support Specialist
Autodesk Make | Autodesk Knowledge Network | Autodesk Advanced Manufacturing | Autodesk Fusion 360
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Gabriele, in the "Z Level Example" toolpath, did you draw a circle around each of the holes and select that as your boundary? I'm a little unclear about where exactly the boundary should be. At first I created two curves, one on the top edge and one on the lowest edge of the radius, and then offset those curves outward. Z-Level Surface Milling is what most people in our shop will be using, so I will focus on that before exploring other strategies.
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Gabriele, in the "Z Level Example" toolpath, did you draw a circle around each of the holes and select that as your boundary?
Yes correct.
You have right when you said that Z level is the toolpath most used, the only limit for this strategy are the shallow areas, in this case having to ensure a constant Z-step will increase laterally on these shallow.
You can still improve by using "Scallop stepover" and entering a Min. Z increment value, see the image.
Regards

Gabriele Esposito
Sr Technical Support Specialist
Autodesk Make | Autodesk Knowledge Network | Autodesk Advanced Manufacturing | Autodesk Fusion 360