If you run linux, I just discovered this what-appears-to-be-the-first-full-fledged-solid-modeler-ever HERE. It has installers for win and os x as well; I don't run win but it didn't work on os x for me. Building took quite a bit of time on linux; perhaps 3-5hrs.
Btw, you can export movies of your stuff in SketchUp, though you probably knew that. Here's a minimalist cribbage board design I used to get feedback from a customer: LINK.
The is the second 'What are you working on?' thread. The last one is here. So here's the question:
What are you working on?
Here are some guidelines