About this 3D model

I have a Prusa 2 and can't print the crossbeam of the original Spool Holder of SJP (http://www.thingiverse.com/thing:28879) so I made a shorter version of 10 cm, that also fits better for my 1kg spool. This crossbeam can also be used for other spool holders like http://www.thingiverse.com/thing:40636 instead of using zip-ties. The dxf file is also attached.