huh, didnt know you could do that, neat.
however that wasnt what i was imagining when you said 3d chamfer, what you have pictured is a varying width chamfer on a planar surface, i was thinking more about chamfers going up and down a surface, which you'd have to use a ball mill and scallop toolpath in fusion.
Well, another type of feature that he and I have both fought, just search the NX forums with their NEW AND IMPROVED SEARCH!, with is using a double sided chamfer tool to deburr/chamfer the ID of a pipe. Last time I had to do that it gave me fits. Just trying to get it to properly model the tool is a blood pressure raising endeavor. I've managed to get a workable code once, gave up another time, and used one of the managers personal copy of MasterCam X4 another time.