Can't chamfer a single edge

[JetForMe]

My geometry is straightforward: there's a modeled chamfer on one edge of my part. I'm trying to make a 2D chamfer toolpath to cut it, but F360 just says it couldn't create a toolpath. File enclosed. Latest version (as of this posting).

[LibertyMachine · Accepted solution]

For starters, you did not have the Model selected in your Setup. This is one of those things that really shouldn't be considered optional, as a good deal of toolpaths (in the 3D side) have built-in model awareness. 2D operations are more primitive, with the exception of 2D Chamfer, which checks against the model. So, select your body:

After that, for selecting the single edge: Press and hold the ALT key, select the LOWER edge of the chamfer. This will allow you to select that and only that edge

For the Chamfer settings, you need to change a few things:

1) Set your Chamfer size to zero. You've modeled it, you don't want it any bigger.

2) Turn off "Clearance", set it to zero:

[Trigg3r]

With modelled chamfers I find it a lot easier to use 2D Contour. Especially in this case, as the Clearance option is negated as it actually causes the toolpath to fail, as does having and horizontal lead in. (don't want lead in anyway if there's a clearance issue)

Using 2D Contour gives you the chamfer option with a chamfer tool selected, just set the width to 0 as above, set your desired tool tip offset (height, so you're not cutting on the tip of the tool) and then you can use both vertical and horizontal leads as well as pass extension if required.

 

[JetForMe]

Thank you, that seems to have fixed it. I didn't need to select anything for model (I think it uses everything in the model by default), and I needed to set the tip offset to keep it from putting the tool tip right on the line. Definitely unintuitive (e.g. clearance should still work, what if I needed it to because of a feature that the shank might hit?). In any case, thank you.