About this 3D model

I'm currently printing the Portalcyclone CNC by azamo (http://www.thingiverse.com/thing:238329), there are no instructions yet so I wanted to figure out how everything fits together so I assembled the STL objects into a single file. I still don't know where the nutholder.stl part is supposed to go. *Farin pointed out that "the nutholder goes on the front of the ynutholder on the underside of the machine"* Of course this is not my design and all credit goes to the original designer. The size of the table is different from the original, since I want to build a smaller version (but still larger than the original Cyclone PCB factory.