how to extrude a curve to create a hollow torus i created a mesh torus to scale.

however, the design has multiple tori.

i am concerned about the weight. with the specs based on a solid torus, the end result would be very heavy.

is there a way to make a hollow torus and specify the thickness?

i saw a similar post about extruding along a circular path to create a torus, but it seems like the suggestions would still result in a solid object.
I think you are talking about Bevel for Curve:


Create two curves, one for section (tori), one for path;
Select the path curve, find Bevel Object in its Object Data panel, choose the other one as the bevel object. Then you can scale either of them to change both ratios for it.