Hi, this is my first post and I cannot figure out what I am doing wrong. I’m trying to do a sweep between 2 objects, one is smaller and other bigger. I’m marking both faces + guide line and it is constantly showing fault “Swept body has self-intersection in at least 1 of it’s geometries…
Here is link from my screen recording from loom, if anybody could help?
You could use a loft operation then use then use the shell tool.
Your sweep is failing because the arcs your created did not make an enclosed sketch. A closed sketch can be made into a body. If it is not enclosed (enclosed if it turns a light blue) it won’t revolve, sweep or extrude.
Hi, thank You for Your response. I’ve done it like that and still nothing, I’ll try now redo the file, maybe I’ve done a mistake at early stages…
I’m definitely doing something wrong, please see below video when I tried to just do sweep on 2 circles…
I cannot see your video. However I think I can still help. I suggest you create a “Plane : on a point on a curve” on one of those circular edges. Then select the plane to sketch your profile onto. Then it should sweep.
Planes are the best! 
And I have only had 2 sips of coffee so I am SO not awake… Oddly that’s when I do my best work. 
Sweep doesn’t work that way. In its simplest form, sweep works with a sketch, like a circle, perpendicular to a line or spline. It does not work between two circles. What does work between two circles is Loft however since you want a curved conical wall between both of your surfaces, you should use Revolve.
Look at the solution on this thread. Your problem is related. Xdrakosha illustrates your probable problem.
I think he’s not connecting the lines into a closed sketch properly.
