ZBrushCentral

Adding mesh to one side subtracts from the other side.

ZBrush Usage Questions
#1

Hi. I have encountered a problem while modeling that I cannot figure out. I used the move and snakehook brushes to pull out the legs of my cat model, and when I try to bulk up the legs with either the standard brush or clay buildup brush, it subtracts what I add from the other side of the leg.

Here is an example of the problem: I used the standard brush to add mesh to the back side of the hind leg, and the front side becomes concave.

problem2.jpg

Why is this happening?problem.jpgproblem2.jpg

Attachments

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#2

By default, brushes act on a spherical volume. The radius of your brush is greater than the thickness of the leg, which gives the results you’re seeing.

If you turn on Brush >> Auto Masking >> BackfaceMask you can prevent the brush from acting on polygons that face away from the clicked point. The feature was created for exactly this kind of situation.

#3

That fixed the problem, thank you!