Odd Fillet Behavior

[Anonymous]

I'm filliting an edge made from a spline, and depending on the order I pick the edges made from this I get either a complete fillet or what looks like a variable filliet. 

[Anonymous]

Here's the model and a results image

[wilkhui · Accepted solution]

Hi Donovan,

Sorry to hear about the strange behaviour you're experiencing, but this is caused by the nature of the profile you've chosen: A-B and B-C are non-tangent.

A way to check for non-tangency is by clicking an edge and if the fillet/chamfer pop-up appears then the edge is non-tangent, as shown on the upright edge normal to your profile below:

You could remedy this by adjusting Sketch4 to give tangent constraints between the three lines.

Does this help explain the unpredictable result? Please feel free to follow up with anything further!

Best wishes,

Indy