I have battled this problem for quite some time and have yet to find a suitable solution. How would you join these two solids or surfaces? This is intended to look like liquid mercury spilled out on a surface. I have probablly tried 20 different ways and every solution I come up with ends up with some kind of major kink/wrinkle or very non-liquid looking shape in the surfaces.
Here is a typical cross section:
Thanks for considering this difficult problem.