[ZBrush] Can you Dynamesh a modular non-watertight mesh?

bitinn

Can I take a modular mesh, say a piece of terrain, which has no thickness and only 1 side, somehow dynamesh it and not result in many holes around the edge?

So far I only manage to sub-divide it, but not dynamesh. Any tricks to this?

bitinn

Also a follow up question: If I aim to bake normal maps with high poly terrain meshes from zbrush, how should I fix the seams between normal maps?

I saw quite a few tileable zbrush sculpting tutorials, they deal with a plane, but I have modular pieces that are corners, so can't use that align mesh to viewport trick below:

https://www.youtube.com/watch?v=Pdh0peG4oys

bitinn

I also have tools like Substance Painter, Designer and Marmoset Toolbag, if there is a quick way to fix normal map seams directly using them, even if manually, I would do it.

Benjammin

You can add thickness to something you want to dynamesh by using morph targets. Store Morph target, move your mesh down, switch morph target, then generate the diff mesh.