voltage control and measure box - speed controller

This a small box that can hold a dc dc converter, voltage display, toggle switch and a multiturn potmeter.
I designed this as a speed controller for a dc motor used in my filament extruder. See http://www.thingiverse.com/thing:677144
But it can be used everywhere you need a voltage display or adjustable voltage .

There is no bottom for it. Just mount it somewhere.

printing: no support needed. fill value not critical - I used 90%. Layer height not critical. I used 0.3mm for faster print,