ZBrushCentral

Sculpt Clipping?

ZBrush Usage Questions
#1

Hello, I am choo. Very new to ZBrush, but there’s something I’ve been experiencing on all my sculpts that has completely stymied me.

Attached are images to better illustrate the issue I’m having.

I am unable to add layered subtools to my base mesh because of what seems to be a clipping error on small parts of the sculpt.
***8203;
For instance, on this example I have a basic head with tusks coming out of the mouth. After converting a Zsketch to something I can work on, this is what it looks like after a bit of noodling:

So as you can see I want to fix that bulb at the top. Here’s where the problems start. When I go in to flesh out that kinked-in area, this is what happens:

As far as I can tell, I have some sort of option enabled that causes the geometry of one side of an object to ‘borrow’ from the other side. It only happens on small objects, but it means that trying to add volume and forms to, say, clothing subtools is next to impossible (they thin and flatten out until my brush actually eats holes through the mesh.)

What could cause this? Halp!

Attachments

FjVDn.jpg

zasculpt2.jpg

zasculpt3.jpg

#2

What looks like is happening is that the brush size is larger than the mesh, so you are affecting the back polygons. You can fix this by going into Brush->Auto Masking -> BackfaceMask and you should be good to sculpt! :slight_smile:

As for the holes in the mesh, if polygon faces are overlapping, it will erode the dynamesh when re-projected. You can check to see if this is happening by enabling ‘Double’ in the tool ->display properties menu and PolyFaces to see if any of your geometry looks like this:
overlap.JPG

#3

Thank you!

That particular example was just a Zsketch work-up on a single Zsphere, so it had holes in it to begin with. But I will go try out that masking option immediately!