Filament Guide for the CTC Prusa i3 Pro B

This is mainly to stop the filament from carving a groove in the top of the 3d printed spring loaded extruder which you should have printed already as without it it under extrudes. Even if it's printed in abs (which mine is) it will still get worn where the filament goes in. It works with a 695 bearing (do not confuse with 608) what can be found on the inside of some fidget spinners: https://media.licdn.com/mpr/mpr/AAEAAQAAAAAAAAyqAAAAJDMyMmY5ODM2LWQ4MTEtNDRkNy1hZWE5LWUzOTQ2NTliYTU0NQ.jpg
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