Fusion
Glitching when chamfering/fileting coils
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Hi,
I have noticed fairly inconsistent performance when chamfering and filleting coils.
What am I trying to do: I tend to create a lot of parts that interface with threaded existing parts. Many of these existing parts have non standard thread so I have to reverse engineer what is there and model it in Fusion 360. The parts I create are fed to my 3D printer so I do need the threads modeled, not just represented.
Workflow: After taking my measurements from the physical part I create a surface at either the minimum or maximum dimension then create a coil on that surface. I exclusively use the triangle profile. Then once the coil is created I like to fillet the peaks and valleys of the thread to help manufacture. (For the uninitiated, creating fine threads with a FDM printer is asking it to do something it is not great at so concessions need to be made on sharpness.)
The Problem: When I create these fillets or chamfers I notice glitching in the generated profile when viewing in a sectional analysis. The attached pictures happen to be the latest occurrence, prior occurrences are nearly identical in form. Interestingly these glitches are not uniform although the coil profile is. I have tried altering settings in the chamfer/fillet operation but that seems to move the glitching, not eliminate it.
