How to create a Torus with a non-circular cross section? I want to create a torus-like shape, however using a cross section that is not circular. In particular, the shape I'm trying to make would have a cross section that consists of a rectangle, with one side replace by a half-circle (as in the picture). The circular side would be inwards, towards the center of the Torus. 
I have found answers for how to do this out there, but all of those that I've found apply only to pre-2.8 Blender.
You've already made the profile, you're nearly there..
In Edit mode, drag the profile a little way from its object's origin

(Here, the axis of rotation is going to be Y, it's the profile's Y axis, as well as the world's)
Give the profile a Screw modifier..