Adapter for flexible Filament Prusa MK3

thingiverse

I've struggled with printing flexible filaments on my Prusa MK3, and I'm not alone. The filament tends to curl around the bondtech or slip out through the side hole. It's a problem caused by the pathway the filament takes into the melt zone leaving too much room for it to kink or coil inside. To solve this issue, I designed an adapter that reduces unnecessary space between the bondtech and the hotend. I printed it with normal PLA using my Prusa Printer, and I recommend printing it at 0.15 mm layer height. This adapter is meant to be inserted without disassembling your extruder; just open the side of your extruder (check out the picture), and push the adapter into place. Tightening the extruder screws will secure the adapter in its correct position. One thing to note: I had to trim a small portion of the PTFE tube to get the adapter to fit properly. Use a cutter to remove any excess PTFE sticking out of the hole, but be careful not to let it fall into the hotend. This adapter is designed to stay in your extruder permanently. Once inserted, you won't need to remove it for different materials; it works well with all of them. Just remember that printing flexible filaments still requires proper adjustments to your print settings.