Printrbot Simple Metal Simple Feet

Simple feet for the Simple Metal. I've included both the whole model and the model split as bottom and top - try printing the bottom part in flex material, then overprint the top part in ABS by swapping out to the ABS filament, loading the top gcode in, then printing again w/o removing the bottom parts. The top STL is tricked-out by adding an unprintable block to make the model "float" at the correct level (on top of the bottom) when loaded into Cura.

Also included the .stl file to make i