Perhaps some guys of you know the mask extraction that Zbrush offers. I wondered if this function is available in Blender, too. Well, it is, with the Sculpt Tools UI addon.
The first thing you need is the addon. You can download it here, I am using Blender 2.74 and it works with this version.
The addon offers many functionalities but I would like to focus on extruding meshes from masks painted in sculpt mode. When you installed the addon from the zip file you enable it here:
In my sample project I used the base male mesh by Jonathan Williamson, thanks a lot for that, you can find it here.
I added a Multiresolution Modifier (Subdiv 3) to it and this is how I started:
After that I applied the modifier and changed to sculpt mode. I used the mask brush:
Now it’s time to paint the masks to the model, let’s say you want to extract some gloves:
When you have painted your masks (symmetry on in sculpt mode) press Shift, Ctrl + B keys (the shortcut for the Sculpt Tools UI addon) and select Mask Extract:
You get the following result when using this settings:
You can see in the hierarchy that a new object has been extracted and added to the scene:
Now you could go ahead and sculpt the new mesh as you like:
It’s a great addon for various use-cases, I use it a lot.