Pasted below is what the developer of MAdcam (Joakim) replied to the same question in the MAdcam forum. I tried the suggestions and did see improvement, but there are still miniature line sigments. I checked the G-code, and there are no G2/G3 just smaller straight line moves (from what I can tell...I'm also new to this). So maybe to get perfect arcs for this sofware I would have to mod the G-code. Not sure if it would really matter much anyways (?).
Regards,
Eric
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There are two things to check.
1) The mesh tolerance in Rhino.
If the model is shaded when you select surfaces for toolpathing, madCAM use the Rhino render mesh. To control this, please select Rhino options/mesh. The settings should be something like this for inch (custom settings, maximum dist edge to surface = 0.001, Refine mesh and Jagged seams) for mm it should be (custom settings, maximum dist edge to surface = 0.01, Refine mesh and Jagged seams). If the model isn’t shaded, madCAM will calculate the mesh and use the tolerance set from madCAM options. I would recommend to always having the model shaded when selecting for toolpaths calculation. This way is faster and if setting the flat shaded view option in Rhino, you will get what you see. Please also have a look in the madCAM help-file/select-model.
2) The tolerance set for the cutter.
It is also a tolerance set for each cutter and this tolerance is used when calculating the toolpath. Smaller tolerance will give a smoother toolpath.
If still having trouble, you are welcome to send me the model and I will have a look and create some sample toolpaths and send it back together with settings.
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