BWflexTruder 1.0

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Hello 3D printing world, this is my attempt to improve the already awesome extruder of the Original Prusa i3 MK3 a little bit more. I wanted to print flexible materials more reliable. So I started with importing the original body into Fusion360. In Fusion i did the following: I moved the holes for the stepper mount 0,5mm to one side to straighten the filament path. (Take a look at the pictures) (Because of that there is also a new idler and a new x-carriage with the adjusted holes.) I added a better guide for the filament after the hopped gears to prevent flexible filament like "das Filament TPU" from bending. I added a small support thingi for the new filament guide to print it better. I cutted a special fitted PTFE tube for the hotend that goes all the way into the new filament guide. The top end is v shaped. (See pictures) Unfortuanly I distroyed mine during some experiments before measuring. (Maybe I add that later) I uploaded a few renders to better see the new filament guide. Since the extruder is already installed on my printer to give it a few test prints there is not much to see on the pictures. I printed a few things in "das Filament TPU" with 30mm/s and 2mm retraction. I had no issues with under extrusion or bedning of the filament.Also PLA and PETG seems to print like before. I hope you like it.Bastian

Author:
bitwizzard

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