BWflexTruder 1.0
BWflexTruder 1.0
Published 2018-03-12T18:38:47+00:00
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
Print in PETG, ABS or other high temperature resistant filaments and not in PLA!
I really wanted a stiff part so this is my setting:
0,15mm layer
30% Infill
3 Perimeter
Detect bridging perimeters
Detect thin walls (If not ticked the support gets lost)
No additional support needed if you use the build in version
Here are my settings in Slic3r for TPU: https://imgur.com/a/HSmIO
Bed adhesion on PEI: TPU is a bitch... I sticks way to good to PEI for printing directly on it. You will damage your PEI if you try it. I use 3DLAC (http://amzn.to/2tyjcNj). It works raally great. It sticks perfect and come lose after the print.
Date de publication | 12/03/2018 |
Durée d’impression | 600 - 700 minutes |
Quantité de filament | 88 |
Technologie | FDM |
Complexité | Easy |
Sans support | YES |