Sketching on the end of a swept profile
I'm having a problem selecting the end of a swept profile to sketch on to. I drew a circle as a 2d sketch, then swept the circle along the length of a 3d helical sketch. All good so far. Now I'd like to sketch on the circular face at the end of helical sweep. I've selected 'create new 2d sketch' then selected the circular face to sketch onto, but the sketch I then draw appears in a completely different place in the model?
Any help much appreciated!