Issue with Fusion 360 and contours

[TinWhisperer]

What should I cut out what should I leave?

So I would start out by using the red padlock tool to turn all these green lines to Blue. Green is locked sketch lines blue is unlocked sketch lines Sometimes when you have a arc ellipse or semicircle cut very acutely infusion has a hard time recognizing those points coming together as closed. There is a add-on for Fusion 360 called sketch-checker that can help with actual open gaps. But in this case I would try to knock those sharp corners off with the radius tool or even just with the line…

You’re having the same problem that another forum member was having just a little while ago.
Read through this topic and if you have any other questions let me know with a @TinWhisperer .