Prusa MK3 Filament Guide for External Spool Holder

cults3d

I don't like the idea of 1kg filament spool mounted on the top of the frame (which is not that rigid to needlessly strap extra weight to it). I didn't find any design that would fit my needs, so I decided to make a new one. Perhaps it is a bit too complicated and big (adds 20+ cm to the printer height), but it gets the job done. :-) The STL files are more than a year old and there might be some small mistakes (like front puley holder cover, which doesn't really fit). Or the front pulley itself... it is rather ugly :-) But nothing serious to prevent proper function. Compatible with the Original Prusa i3 MK3. Might also fit MK2 or anything utilizing the same frame type. Also you could easily design different mounting parts yourself to use this for different printer. What you need to print: 1x main_pillar 1x pillar_mount_1 1x pillar_mount_2 1x front_pulley_holder 1x back_pulley_holder 1x back_pulley_holder_cover (optional) 1x filter 1x pulley_front 2x pulley_back 6x bearing_center Other (non-printed) parts: 3x 608ZZ bearing 3x M4x20 bolt + nuts 2x M4x16 bolt + nuts 7x M3 bolts + nuts 2x M5x18 (or slightly shorter) + nuts piece of fabric to fit into the filter box small piece of PTFE tape or something similar