Wanhao i3 Spool Holder No Hardware version

This is a remix of CYUL's http://www.thingiverse.com/thing:1635585/#files that doesn't require hardware or you can use M3 bolts. This reduces the amount of fasteners needed to only 3 per side. Also I didn't have any 608 bearings laying around but did have some 5x10x4mm (MR105-2RS-BU used in Wanhao i3 Y idler) so I modified it for these bearings as well. Also the original design didn't fit on my frame so I adjusted the dimensions as well. All tolerances have already been added so it should fi