SevenSwitch FET case

This is a simple case for the SevenSwitch http://reprap.org/wiki/SevenSwitch_1.2

I printed it in PLA using 0.2mm layers with no support. It prints fine, and clips closed with no need for screws or similar.

Designed in DesignSpark, this is an original design, not based on any existing work.

Other parts designed for my printers include:
- http://www.thingiverse.com/thing:1959901 (GT2 belt clamp (Prusa Y-axis)
- http://www.thingiverse.com/thing:1937232 (Arduino Mega and RAMPS v1.4 case)
- http://www.thingiverse.com/thing:1905409 (Prusa i3 steel 10mm upgrade)
- http://www.thingiverse.com/thing:1959974 (Prusa i3 Steel Y-axis motor mount)
- http://www.thingiverse.com/thing:1991116 (Prusa i3 Steel X-carriage)
- http://www.thingiverse.com/thing:1991117 (E3D Chimera / Cyclops mount)
- http://www.thingiverse.com/thing:1994413 (dual E3D Thermocouple amplifier board - housing)
- http://www.thingiverse.com/thing:1090661 (Belt driven Bowden extruder with 1:2.5 reduction)
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