Prusa i3, dual bowden stepper motor mounts and filament guide

these along with the linked parts cover my complete dual bowden setup for my prusa i3 with dual e3d v6 extruders. 

dual extruder mount and print cooler shroud > https://pinshape.com/items/5661-3d-printed-prusa-i3-dual-e3dv6-bowden-mount-and-print-cooler-shroud

dual spool holders > https://pinshape.com/items/5659-3d-printed-prusa-i3-dual-spool-holders