I recently printed the awesome Stormtrooper (http://thingiverse.com/thing:588) and Darth Vader (http://thingiverse.com/thing:7215) heads and wanted to give Yoda a platform to match.
I imported Yoda along with Darth Vader into OpenSCAD and was quickly able to scale Yoda down and add a platform to suit. Unfortunately I couldn't get OpenSCAD to render Yoda so I was a bit stuck. After trying cloud.netfabb.com and then playing with Meshlab for ages I still couldn't get the model to render and I have no idea how to use Blender. :(
I was about to give up when I realised I could just print the platform I'd designed and then print Yoda separately on top. It worked a treat! :)