About this 3D model

## OBSOLETE Use [thing:459777](http://www.thingiverse.com/thing:459777) instead. --------------- Print out two of these and you can then mount a [RUMBA](http://reprap.org/wiki/RUMBA) controller board to the underside of the top of your 3DR Simple, using the existing holes. You need four M3 screws and four M3 washers.