Hello
I didn’t read all the thread but now you could use Isopod for Metaballs. So @Joseph_Oster could be happy to have just Legacy components 
But you need R8
First you’ll have to find the good radius and good smoothing. In order to go fast I just use a slice. But you can put more slices if you want. It is important to have orange and blue, transition is between the 2 colors
Play with sliders (radius and smooth transition) in order to have the transition you want
Then you can use the dam to see the result; augment the resolution for fine mesh.
metaball LD Isopod .gh (27.2 KB)
And other thing it is completly useless to make it a volume if at the end you just want the contour !!!
just do boolean on curves
metaball LD no 3D volume.gh (25.6 KB)
