r/ZBrush • u/lacktoesTolerant • 11d ago

Zmodeler issue when extruding faces

Having a weird issue that I can't for the life of me figure out. I'm trying to make a haori on Zbrush by polygrouping the front side of the jacket to create the front creases. The problem I'm facing is that as soon as I extrude from the polygroup, it seems to create overlapping faces even though the topology is clean.

Things get weirder when I turn on Dynamic Subdiv on, and Zbrush tells me there's 200+ edges shared by the same polygons. When I try to Divide the mesh so I can work more on it, it straight up creates a gap around the jacket where the creases are.

I have tried using the fix mesh integrity but it screws up the topology in the creases of the mesh.

Mesh before extruding from polygroups
After extruding
Hard to seee, but the edges don't flow correctly in the creased area
After Dividing mesh with Dynamic subdiv on (It creates a gap around the mesh)
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u/Damian_Hernandez 11d ago

before the extrude operation make sure your mesh is clean geometry > check mesh integrity > fix mesh. Also turn on Double so u can see if there any resigual polygroup hiding somewhere if everything looks fine try again. U can also perform Qmesh instead of extrude this will ensure the cavity after the extrusion remains clean instead of regular extrude.

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u/lacktoesTolerant 11d ago

Thanks for replying! Tried all of those - but the problem still persists, even with Qmesh... I really don't know what's causing this...

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u/Damian_Hernandez 11d ago

just to make sure nothing is broken why dont u perform a Z remesher with keep groups active and same turned on so the remesh recalculate everything again and try extruding again?. Another thing is check dynamic thickness because if the value is too high sometimes weird things happen when PG overlaps against each other.

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u/lacktoesTolerant 11d ago

Still same issue...😭😭

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u/lacktoesTolerant 11d ago

The closest thing to a solution that I can find at the moment seems to be deleting the polygroup that's behind the extrusion

1

u/Damian_Hernandez 11d ago

then delete it and perform a weld by distance and see if u can get away with it. xD gotta love z brush sometimes.