ZBrushCentral

How to design a ring in Sculptris?

Hi there buddies,
First of all please apologize me because of my English, I may have mistakes in it so please excuse me.
I’m completely new to 3D graphics world! and I haven’t worked with any famous 3D programs like ZBrush , etc. I’ve recently got the latest version of Sculptris and I amazed of it’s minimalist design and powerful features. So I thought that maybe I should start with this program. I’m trying to design a wedding ring but I can’t, I used most of the program’s tools but they cannot make a ring. I start with a Sphere and simply the program (or me!) can’t dig a clear hole inside it! like a ring.
So what should I do? Is there any way to design rings?
Thanks.

You should probably post your question in the Sculptris part of the forum, which is here: http://www.zbrushcentral.com/forumdisplay.php?110-Sculptris-Main-Forum