Yeah, I've dabbled in 3d animation over the years as part of my career in video production - so I've found it somewhat easy to pick up trying to model playsets in Sketchup. They have to be designed first, then it goes through the 3D printer software, and then apparently you cross your fingers and hope it prints something nice. I expect it will require a lot of fine-tuning before I start printing good looking stuff. I'm just starting to enter the mindset of how to design pieces that can fit or snap together (the printer, C-3DO, will only print items 6x6x6). I tested and I think I'll be able to use Instamorph as a type of glue (it sticks to the 3-d printed plastic pretty well), too.
Looking forward to talking a bit about these beasts on the Podcast.