List of sites
How it's done
Here is a list of 3d printing providers that can help you out.
3D Hubs: an online 3D printing service platform. It operates a network of 3D printers with over 20,000 locations in over 150 countries, providing over 1 billion people access to a 3D printer within 10 miles of their home.
Find the closest 3D printer to you, send them your model and they will print it out and send it back to you. It's that simple.
Shapeways: Dutch company with headquarters in New York, where users design and upload 3D printable files, and Shapeways prints the objects for them or others. They offer almost every available material you can imagine, and are ideal for some of your final prototypes. Delivery time may vary depending on your location.
MakeXYZ: Similar to 3D Hubs, MakeXYZ connects people who have 3D printers with those who need something printed out. You can have MakeXYZ do all the work for you (send your file to the closest printer, print it out and then send it back to you), or it can help you out in finding the closest business in your area with which you can connect.
You3Dit: Designed for people who are not experienced with 3D modelling. You don't need your own drawings, models or anything like that - just an idea of what you would like to have made. Team of designers will help you out and when everything is ready, connect you with the 3D printing provider.