Prusa Ball Bearing Filament Guide

cults3d

I wanted a filament guide that would secure the filament with my spools positioned behind the printer using smaller bearings to eliminate drag and wear. I used these bearings: https://www.ebay.com/itm/10x-MR105-2RS-Rubber-Sealed-Ball-Bearing-Miniature-Bearing-5-x-10-x-4mm-Blue-SM/302808483966?hash=item4680cac87e:g:bekAAOSwDrNZPjxz:rk:1:pf:1&frcectupt=true Print with 0.20mm or higher layers, with supports enabled. I've tested using PETG and PLA and it's holding up well to use. The pin for the swivel cap is a bit fragile, but should hold well once inserted. You might want to use PETG or warm it up a bit before inserting the pin into the swivel cap at top. Updated 20190303: V2 files with improved extruder housing clearance at maximum Z and lower bearing axle reshaped to make insertion easier. Updated 20190304: Added V3 fame clip with improved clearance at maximum Z. This iteration secures well while still clearing the extruder better than the Prusa filament spool holder.