This is a simple enclosure for a 7 digit resistor decade with thumb encoders. You can find more information about the concept and the schematics on the EEV blog http://www.eevblog.com/forum/projects/diy-cheap-resistor-decade-substitution-box/
It’s really great and helpful both for development or education, especially when you’re designing opamp designs, filters or audio amps. You can adjust any resistance value from 0 up to 9,999 MOhms. The tolerance depends on the quality of the resistors, but 1% types should do fine for most applications.
download the files on: http://www.thingiverse.com/thing:1079283
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!