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...
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!
edit: YOU should sign up and post! Haha
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.