Yeah there is one over here : http://www.creativecrash.com/maya/downloads/scripts-plugins/modeling/poly-tools/c/p3d-solidify Its a python script. Select the faces then apply the script. A pop-up window will ask you by how much you want the extrude. Its sometimes buggy, but it can do the job in most cases. Demo video :…
awesome! cheers guys. I found that 2011 doesn't have the thickness attribute but from 2012 they added it. the scripts really handy as i missed having a shell type tool to quickly extrude out a hole shape, cheers for sharing :)