I am making a simple water (bottle) rocket, and I want to create a aerodynamic fairing at the junction of the fin root and the body extrude. However, this will not work as the fillet option will curve the wrong way. It curves such that it treats the fin as a separate body.
I know what the exact problem is - the two bodies (fin and rocket body) I believe are separate, after zooming into the gaps at the junction. I used circular pattern tool for the fins, but there is still a small gap seen at the junction - hence the fillet issue. I have tried defining all the sketches. (e.g. coincident, collinear...)
I have uploaded my file below. Any ideas?