April 10, 2022
Description
Update: 25/05/2021
-Hinged Extruder body 1.2 filament path after drive gear tapered for easier filament insertion
-Fitting block 1.2 alignment correction
Update: 30/10/2020
New Extruder with Hinged Lever for overall better reliability and ease of use.
Also new knob with thicker hub.
Hinged Extruder body.stl
lever.stl
manual feed knob.stl
Hinged Extruder.scad for customization
NOTE: STL FILE INCLUDED IS FOR EXTRUDER GEAR DRIVE WITH 8MM OD (gear_diameter=8;)
PLEASE CHANGE THE VALUE in the first variable in the SCAD file >> gear_diameter if you have a bigger drive gear.
gear_diameter= [your gear OD size];
Update: 3/17/2016
Added Counterweight Suspension System for the Flying Extruder to minimize additional load on the stepper motors. This makes the whole extruder virtually weightless. Please print new_plate. This moves the suspension point at the center of gravity of the motor and is adjustable. Check out new files and video. Thanks!
You will need a slightly longer bowden tube since you will raise the extruder. Get rid of the old knob and replace it with a M3x25mm screw and washer and cut a piece of rubber tubing to act as a spring to push the lever on to the filament.
Flying Extruder kit for the Kossel Mini. Can be used with any delta as well.
See video below to see it in action.
I would like to give credit to WASProject of Italy for their Suspended Bowden from which I derived the design for this Flying Extruder. http://www.wasproject.it/w/bowden-sospeso-di-wasproject/
DO NOT print plug.stl It is used for the SCAD file, for "tapping" a 1/8 BSPT thread. If your fitting is different, use this https://www.thingiverse.com/thing:227192 to make a different plug.
SCAD files are included for your customization.
(Nema 17.scad file is from Johann's Kossel Mini files)
You'll need:
M3 x 16mm screws for the nipples
M3 x 35mm screw for idler adjust
M3 flat washer to insert in slot at back of extruder body
M3 nut to insert at bottom of back of extruder body (to mate with idler adjust screw)
M3 x 24mm x 3 screws for mounting motor
M3 x 12mm x 2 or similar course thread screws to fix plate to body
Clear epoxy or CA to glue fitting block to body
Bearing 16x5x5 for idler
Bolt M5 x 16mm for idler hub (A simple 5mm dia x 20mm rod will also do. I used a 5mm rivet)
3/16" ID x 100mm x 3 rubber tubing for suspending the plate to the nipples
If you like it and find it useful, I'd appreciate a small tip. https://paypal.me/boksbox/1USD
Printer:
Kossel Mini
Rafts:
No
Supports:
No
Resolution:
.2
Infill:
30
Notes:
Use solid infill for fitting.
3 perimeters
Glue fitting to extruder body
Insert the fitting into the extruder body front. Parts may need some filing to fit properly. Remove fitting from body and apply some epoxy to both mating sides. Re-insert the fitting to the body. Align the filament passage holes properly before the glue sets. I used a 2mm drill bit to make sure the holes are aligned.
License:
Creative Commons — Attribution — Noncommercial
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