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ZREMESHER HELP

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#1

I was wondering if someone could help me with this ZRemesher issue I’m having. I cant figure out why I keep getting really bad corners when I go to remesh my sculpt. I use a boolean set up with the eyes and mouth subtracted from the base. The end result keeps coming up with bad results. Im not a new Zbrush user by any means but cant get this one to work, im stumped. The blue mesh is the end result.

THANKS

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#2

Make sure the meshes you subtract have different polygroups to the main mesh. The resultant Boolean object will inherit the polygroups of the cutting meshes. You can then use this to your advantage by toggling KeepGroups in ZRemesher. Perhaps also run a Mask Pen around the outer surface of the mouth and eyes only, polygroup and smooth polygroups, to force an edgeloop around the outer part of these features. To capture the tight corners of the mouth try increasing adaptive to 80+. Also, if the mesh is symmetrical, activate symmetry before ZRemeshing. Good Luck.

1 Like
#3

Thanks so much for your advice. I didnt consider that the boolean knockouts needed its own separate poly groups. I understood they needed a similar mesh density but not the PG’s . I will certainly try what you recommended :+1:

#4

@tobor8man So i managed to clean the groups up but i still see alot of messy triangles were they groups meet. Im attaching pics of the mesh before and after i ran the Zremesher. And also my settings. Im stumped as to why its still having problems. Should i perhaps use the Zremesher guides? I havent had luck with those either
Screen Shot 2023-10-04 at 9.22.39 AM Screen Shot 2023-10-04 at 9.22.47 AM Screen Shot 2023-10-04 at 9.22.50 AM

#5

Try either:

  1. Wrap a guide fully around the mouth on the green surface a little way out from the opening. Maybe even another around that. Set Guide Strength to 80+ and Zremesh.

2a. Hide all groups except the outer surface (green polygroup). Mask Pen and paint a mask around the mouth (like applying lipstick). Ctrl-W to make it a unique polygroup. Unhide all hidden polygroups and ZRemesh with KeepGroups and Smooth set to 1. or
2b. After masking, Geometry:Edgeloop:Edgeloop Masked Border to create a smooth edgeloop around the mouth. Then ZRemesh.

Check out these and other techniques in this video by Michael Pavlovich.
Intro to ZBrush 045 - Use ZRemesher to auto retopologize your meshes for nice, even geometry!! - YouTube