Sketch offset won't extrude between lines

[georgejordan]

Hi yah,

Currently running into the problem where I sketched out a profile and did an offset. The sketch geometry doesn't connect and am running into the problem where I cannot extrude between the offset made. It instead extrudes the entire sketch. Even if I try to extrude the entire sketch I run into this error

Error: There was a problem combining geometry together.
If attempting a Join/Cut/Intersect, try to ensure that the bodies have a clear overlap (problems can occur where faces and edges are nearly coincident).

Cheers

[jhackney1972]

The Forum users really need your model to diagnosis your issue.  If you do not know how to attach your Fusion 360 model follow these easy steps. Open the model in Fusion 360, select the File menu, then Export and save as a F3D or F3Z file to your hard drive. Then use the Attachments section of a forum post to attach it.

[davebYYPCU]

Divide and conquer narrows it down to the inside spline of this bulge.  Internal lines inside my red arrow makes it worse....

Might help....