12v Ecig for your car

This is a remix of http://www.thingiverse.com/thing:671394
Softened up the edges for both the lid and box by a .75mm curve. Even if your printer creates it as more of a square edge, there should be plenty of solid print behind it to round/route it.

Parts needed:
LM2956 step down converter
10k ohm knob style potentiomer
12v car accessory plug
12mm momentary push button
voltage readout display
510 ecig connector

The LM2596 comes with a small potentiometer built onto the board,