The tutorials section has been updated with two new videos. The first introduces the Shell feature in the context of modeling a jug. The second covers creating a simple assembly and using the coincident faces and concentric mate types.

Update: I've also added a third tutorial that covers a common case in which the Shell feature might fail on a revolved body.

I've used an updated video compressor that requires Flash Player 8 to view these videos. Please let me know if this causes any problems.