Well, one of my PCs recently gained a small construct, and although Mending or Make Whole say they can heal constructs the I can't find how much they actually heal. Does anyone know?
Mending
This spell repairs damaged objects, restoring 1d4 hit points to the object. (...) This spell does not affect creatures (including constructs).
Make Whole
This spell functions as mending, except that it repairs 1d6 points of damage per level when cast on a construct creature (maximum 5d6).