Hello, I'm new here. I tried moi a few months ago and didn't like it. But now I tried it again and am starting to like it! Here are some torus-knot doodles. The path was made very quickly (and accurately) by snapping verts to the underlying guide-polygons. To save time, remember what was said about the placement of the profile curve when using the sweep command:

"If the circle is outside of the bounding box of the rail curve, it will be automatically rotated and aligned to the start of the path curve. If the circle is within the bounding box of the rail curve, it will be used in its current location and then swept along the path.

The auto-place mode is nice, because you can just draw the circle right flat on the world plane, you don't have to worry about getting it in the right location. You can also have multiple cross-sections auto placed, just arrange them left to right."