PolyFlint is a community created by designers, for designers. It addresses the up and coming medium of 3D printing.
With PolyFlint, not only can you share your work, you can get feedback on it as well as customers looking for experienced designers. It uses an advanced commenting system which allows organized input as well as global recognition.
They predict that the market for 3D printing will grow to 8.4 billion by 2025. Founders feel that with such a growing industry there is going to be a high demand for an organized form of personal advertising as well as constructive criticism from other designers.
Check out their Pitch Deck below which is sure to convince you: