25 Best Sites to Download Free STL Files to 3D Print | All3DP Maybe something for 3D Printer Chat?
3D Printed Greeting Card
CGtrader has been analyzing data on what sells the most on their 3D model marketplace for 3D printing
Here's everything you need to know about 3D printing.
3ders.org - 12 free apps to easily make unique 3D printable creations | 3D Printer News & 3D Printing News
Part 5.1: Retraction
WOW - 3D print your 3D ultrasound!
3D printed gears that work.
Google+ "Nice Print"
The frame of this quadcopter was created with a 3D printer (Photo: swepet/Thingiverse)