Tinkercad is great for making functional parts, but not for making art, toys, or anything with compound curves. So far that's all I've been using, but so far I've mostly been making hinges or project boxes, ect. I saw a Johnny 5 R/C shell on thingiverse that I'm thinking of doing next, it isn't fully articulated, so I might brush up on my 3dsmax skills by adding full articulation to it.
On the burnt out power supply front, I hooked it up to the bench supply and everything appears to be ok, so yeah, it was just the shoddy power supply. So looking at it the transformer appears to have blown or something close to it.... I didn't even know that could happen. That makes me think it was just defective, but it's been nearly a year, so I doubt its worth it to try and get my money back.
I might pull an old pc power supply to run it while the new one comes in... just so I can get this damn sign finished. It's coming along nicely, but the slowness of printing something this big is killing me. It takes approx. 2 hours per letter (1 hour per half of the shell) and it crapped out on the bottom half of the "d" in Nintendo. So I've got about 10 hours of printing left plus however long it'll take to print the loop around the "Nintendo" That's really the only thing that kills me about 3d printing, the speed.... it's just too damn slow.