Hi everyone, new here, and with a total newbie question. I got Zbrush a couple of days ago, so totally new to the whole thing. I have a question about exporting a tool as an OBJ if you have appended subtools to it. For instance, I sculpted a dragon-head door knocker for use in Vue. The head was sculpted from one piece, so that was fine, but then I appended a torus to use as the ring for the knocker. When I exported as an OBJ, it exported the head, but not the ring. Did I miss a step out? (It’s probably something stupid and really simple…)
The easiest is to use SubTool Master. You can get it here: http://www.pixologic.com/zbrush/downloadcenter/zplugins/
Thanks, Aurick! I’ll give that a try tonight. 
You can also use the “Merge Visible” button to selective merge your tools visible polygons as a new tool and export that (depending on your needs.)
-K