Well, I'm not sure Poser would actually weld them together. One could of course always try and see what happens...

But I tried my idea and it works like a charm. I thought it would still be a pain to get the spherical falloff zones right, but the fact that we have two big toe actors actually solves that problem. The outer part of the big toe that touches the other toes is not a child of the main toe actor, but a grandchild. So its movements can't influence the other toes. On the other hand, the movements of the inner part of the big toe influence the outer part anyway, so we don't need to include all of it in the falloff zones. I didn't plan it that way, but by lucky accident, the hierarchy I ended up with turned out to be exactly what I needed.

YAY!

I think it's time for me to go to bed. Tomorrow I'll regroup the other foot and do the proper rigging. It looks like there might still be some slight poke-through in some poses that might require correction via JCM, but nothing like what we saw before.

-- I'm not mad at you, just Westphalian.