Get the ball rolling and design your own custom marble machine. I have created a set of 3d printed parts that allow you to build the marble machine of your dreams as big or as small as you want. With crossovers, loops, switches, and curves you become a roller coaster engineer. Inspired by the marble machine in the Maker Bot Retail Store.
download the files: http://www.thingiverse.com/thing:892619
Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!
Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!