ZBrushCentral

Way to smooth/flatten on only 1 surface?

Hi, I’m working on this helmet, and I finally managed to get some nice clean edges. But of course, over time and with a lot of edits to the overall shape, I lose the crisp edges. Is there a brush that flattens only on one surface? Or is there a way to flatten only one surface, if two surfaces are conjoining at an angle?

Cheers!

I think we are missing your image of reference when you mention"this helmet"
Convex or concave angle?