Parametric Torus in Banate CAD

Ever since I saw the Mobius Heart earlier this week:
http://www.thingiverse.com/thing:13861

I've been slaving away at the forge trying to replicate that feat in a solid math sort of way.

This thing represents a parametric torus, which is NOT the same thing as being able to create a heart shaped Mobius strip, but it is one step closer.

Basically, you can give the torus a function which determines the profile of the cross section of the torus as it sweeps around. In this case, I've use