Hi.
I have 3d scanner. I scanned a head and merged objects into one object in 3d max. Head is symmetrical in principal, but in Zbrush symmetry crashed. How in 3dmax i can create a symmetry which i will use in Zbrush?
here it is screenshot of head in Zbrush…
You could delete one side, mirror and merge to create a single, topologically symmetrical mesh.
ye. i already thought about it… it doesn’t work. 
here results;
any ideas?
it looks like the center of your object isn’t the center of the world in max.
move it to the correct location and then reset the Xform of the object. Convert to an ePoly, then export the object. It might not have X sym…might be another axis as well.
Hope that helps.