Every model I’ve keeps getting this problem where whenever I’m sculpting the symmetry is weaker on one side across different parts. It’s always when I get to fine details and it’s genuinely making me consider cancelling my subscription and finding a new software for sculpting. Nothing I’ve tried work. I’ve enabled local symmetry. I’ve used unify in the deformation tools. The Mirror and weld isn’t an option with my current one as it does have some asymmetrical parts along it’s back (the issue is also occurring where these asymmetrical elements aren’t present) and it always gets rid of my lower subdivision levels which I need . Also I’ve been told it might be something to do with marked history states but I’ve never had any of them on any of my models. I shouldn’t have to do any of these things to begin with. The sculpts were never moved in any way that would make the symmetry off and the two cursor markers are always in the right spots. All I can think of is that this is a problem is all on Zbrushes end.
Hey Trex32,
I can’t tell you why it’s happening, but the bad news here is the only way that I know of to re-establish ‘perfect’ symmetry is to mirror and weld across the sym axis.
Before trying that, you should also try a smart resym: mask off one side of the sculpt to lock it down and then try Tool>Deformation>Smart ReSym on your selected symmetry axis. This will usually re-establish symmetry where ZBrush is able to.
I know you have asymmetrical elements along the midline of the project, my suggestion would be to work on a duplicate subtool and then re-project those asym aspects back onto the sculpt one you have re-established symmetry.
Good luck!
Hello @trex32
Many times it won’t be possible to tell you exactly whats wrong from a brief verbal description of your problem. You can always contact ZBrush Support if you’d like us to take a look at the file to see if we can spot any problems.
Most likely scenarios:
- Your mesh is not symmetrical in the worldspace. To be globally symmetrical a mesh needs to be exactly the same on both sides of the axis plane. If your mesh is even slightly off center, this means that the mesh is not the same on both sides of the axis plane, even if it may be topologically identical from side to side across its own center.
Switch on the floor plane and set the elevation to zero in the Draw palette. This will let you visualize the center of the mesh. You may be able to spot issues.
Next, try using Geometry> Modify Topology > Mirror and Weld with Local Symmetry OFF. If you see any visible shifting your mesh was not symmetrical. If the mesh was truly centered and symmetrical there would be no visible change. You can use the same feature to force the mesh back into symmetry.
- You have a marked Undo History state which influences the surface calculation of many tools. Look up at your Undo History bar. If you see a solid white blip on the history anywhere, this means you have a marked history state. If the blip is at the beginning and red, it means your marked state is on another subtool.
In either case this is simple to clear. Ctrl-click anywhere on ther history bar to mark a state, then Ctrl-click again to clear it.
- Your mesh is drastically oversized or offset in the worldspace, and this can cause a variety of problems.
Good luck! 