Smoothieboard workbench plate

Just a simple workbench plate. Allows to work safely on board during testing / installation phase. Also keeps it cool.

Mounts for dual 45mm fans.

4mm standoffs, vent holes under drivers, main chip and a few random ones. About 3mm clearance from board to fan mounts.

4 x 4.5mm mounting holes

EDIT:
V0.1 14.01.2015
* Made larger holes for fan mount- 4.5 x 6.5mm - will work for fans with hole spacing of 34 to 41mm.
* Fan mounting plates are 1mm thicker
V0.2 18.01.2015
* Tested