T-Nut M3 for Aluminum 3030 Profile

For screw/nut M3 use on Aluminum 3030 Profile.
If you need the source file (FreeCAD) let me know.

UPDATE 30.10.2014
I did this thing again to see if I can fix the way it look...to remove some kind of phantom zone on the STL. Also the FreeCAD source was uploaded.