About this 3D model

I designed this spool holder because I want to upgrade my printer for dual filament printing.I love top mounted spool holders but they seem a little flimsy to hold two filament spools.I need a Hard-Core spool holder for this... The spindle takes two 608Z skateboard bearings and all the parts are reinforced. ATT: The tightness of the ny-loc nut adjusts the drag on the spindle so the spools don't unwind by themselves. Updated 15/10/2017 made a Dual Spool Mount, check my other designs !Updated 26/08/2018 added longer brackets, and a filament guide !!