Printrbot Simple Z Probe Mount

For wooden simple with metal extruder assembly.

This is a mash-up of 3 other files:
http://www.thingiverse.com/thing:274200
http://www.thingiverse.com/thing:302435
http://www.thingiverse.com/thing:308565

Also posted here :http://www.thingiverse.com/thing:317581