To the OP:
> Looks like a well put together website. Kudos!
> I feel it is a bit limiting to call it "Pinterest for 3D printing." perhaps Etsy+ Yelp for 3D printing might be a better description despite the fact that you all aren't really carrying inventory.
> I love that there are multiple options with regard to materials / printers / consulting companies / etc. and most other complementary services that might be relevant to your users. Also love the option for reviews.
Looks really good!
It was a bit strange that in the gallery all the text associated with each "tile" was about the creator and the hardware, with no mention of what it is I'm looking at.
edit: YOU should sign up and post! Haha
Yours is cool in a "nerd" sense, but I'm not sure that the "simple man" get it immediately. As always, it probably hardly depends on who you're targeting...