ZBrushCentral

Mesh exploded! How can I sort this one out?

ZBrush Usage Questions
#1

Hi,

I hope that someone can help me out here. I have a head model that explodes every time I import it back into Zbrush. I modeled this mesh, then imported the basic head into Zbrush. Did all the fine tuning and sculpting to find out that on the upper lips, the generated texture maps is stretched. So, in order to fix this problem I lowered the subdivision to level 1 and exported it as OBJ, with Quad, Text and mrg options only.

Opened it in Maya and added couple of loop edges around the lips. Saved it, imported back to Zbrush with morph target set and the model explodes.

To see if the problem was within Zbrush4, I tried just exporting the mesh at level 1 and import it back without any changes and no explosion. This leaves me wonder if Maya is not messing up with my model or am I missing something here.

I really appreciated for any help in advanced.

Thank you. ![uvproblem.jpg|864x757](upload://pcC7mMpo7xX4TGwNPmU847yQo2A.jpeg)
#2

Can anyone please help me out? Thank you.

Kind of desperate here.

#3

I’ve had that happen to me before too.

What I do is hide most of the good mesh, and then use MOVE and SMOOTH to repair the damage.

#4

Ok from my experience Im pretty sure this is whats happening…

See when you export a mesh, edit it, and re-import it back into the lowest subdivision level what you are effectively doing is running a project all (the option in the subtool menu).

Im assuming it asks you if you would like to reproject the details when you import it back in?

the Dist slider next to the project all button determines the distance zbrush looks for a surface to project onto, try turning it down to a low setting and importing the mesh again.

I would also advise importing the fixed model as a subtool and using the project all manually, that way you can tweak it easier by simply undoing, and projecting again with different settings.

To sum it up, lower the Dist setting of the project all menu under subtools.

I have some other advise on the subject, but I want to make sure I nailed what the problem is first.

#5

Thank you all for your feedbacks. Here’s what I just found out and tested:

I exported the mesh into Maya to add the loop slice and imported back to Zbrush -> Explosion

I exported the mesh into Silo to add the loop slice and imported back to Zbrush -> Explosion

I then imported back to Hexagon, in which, was the app I used to model the mesh and imported back to Zbrush -> NO PROBLEMS!

@TheRoder,

I don’t really like to use the project all, as I think is troublesome. Though it could be a solution never the less. But after testing it as described above, I find it weird and if Maya or Silo is not messing up the scale… At least I set it to 1 before exporting it, under Export tab in Tools.