Extruder Filament Guide (for Amazon extruder)

thingiverse

Like many using the Davinci Pro 1.0, I had lots of problems with the stock extruder, so I decided to replace it with this one from Amazon - https://www.amazon.com/gp/product/B0774JZ9N5/ref=ppx_yo_dt_b_asin_title_o01_s02?ie=UTF8&psc=1 (the "Iverntech 3D Printer Right Hand MK8 Extruder Aluminum Frame Block DIY Kit for RepRap Prusa i3", but there looks to be many identical ones going by different names). I immediately started having issues where the filament would start coming out past the gear and become a tangled mess blowing out of the extruder instead of passing through the block into the ptfe tubing. My solution was to take up as much of the gap as possible between the gear and the block, by creating this sleeve. It slips right over the block and I insert a short piece of 2mm I.D. (4mm O.D.) ptfe tubing into it (from the gear side, I had to remove the gear and roller guide to get the tubing in) to take up any remaining space. My feeding has been super consistent and my prints very clean and reliable since adding this in. I printed this on my Anycubic Photon Mono X (mostly because I couldn't print on the Davinci until I got this made!) and the tolerances are perfect - it slides on snug, it fits the ptfe tubing without need for glue, and nothing moves once it is put together. I am sure you can print it on an FDM printer as well, I will love to hear how it works for anyone that does.