----------------------------------------------------
Seite: technics-machines-3D-printer-Granule-Extruder-V3_ge.htm
Datum: 2023.11.19 13:17:48 (UTC+1)
Name: Noah 3d
Kommentar:
Können sie noch ein viedio dazu machen wie sie den Extruder V3 zusammen bauen ich will mir diesen Extruder bauen aber wüsste z.B.wie die fertige Schraube/ förderschnecke aussieht.
Me: Der Granulatextruder V3 ist immer noch im Prorotypenstadium. Dafür eine Schritt-für-Schritt Anleitung zu schreiben, wäre Zeitverschwendung. Die Abmessungen der Schraube sind in Abbildung 4 zu sehen.
----------------------------------------------------
Seite: technics-machines-3D-printer-Granule-Extruder-V3_ge.htm
Datum: 2023.03.15 22:30:21 (UTC+1)
Name: Subu
Kommentar:
Wollte nichts gegen ihren Extruder sagen. Mich hat er bei Überlegungen zu einem Tonextruder inspiriert. Und dann dachte ich: warum nicht noch ein paar Ampere zulegen, das häßliche Zinngeschirr aus dem Wohnzimmerschrank mit einer groben Eisenfeile pulverisieren, als hotend nen ollen Lötkolben opfern. Adieu schnödes Pla stik. Die meisten meiner Ideen sind entweder obsolet oder unrealistisch hinsichtlich der Umsetzbarkeit. Hab leider nur rudimentäre Kenntnisse in Stromverarbeitung, aber ...
Me: Hat doch niemand gesagt, dass du was gegen meinen Extruder gesagt hättest ;-)
Soooo einfach lässt sich mit Zinn nicht drucken. Plastik hat einen Erweichungs-Bereich, Zinn ist entweder ganz fest oder ganz flüssig.
Aber viel Spaß beim Experimentieren und lass von dir hören, wenn's geklappt hat!
----------------------------------------------------
Seite: technics-machines-3D-printer-Granule-Extruder-V3_ge.htm
Datum: 2023.03.15 17:09:05 (UTC+1)
Name: Subu
Kommentar:
Mal ne ganz blöde Frage: Wär das nicht einfacher das Granulat zuerst in ein 1,75mm dickes Würstchen zu pressen und dann mit einem ganz herkömmlichen Druckkopf zu verarbeiten? Oder wäre das unsportlich?
Me: Erstens ist es alles andere als einfach, das Granulat in ein 1.75mm dickes Würstchen zu pressen und zweitens, warum der Umweg, wenn's auch direkt zu Drucken geht? Außerdem kann man mit diesem Extruder auch Materialien drucken, die man nicht als "Wüstchen" verarbeiten kann. Beispiel ist Zucker, der einfach zu brüchig ist.
----------------------------------------------------
Page: technics-machines-3D-printer-Granule-Extruder-V3_en.htm
Date: 2023.03.10 11:45:56 (UTC+1)
Name: Ian van Zyl
Comment:
Dear Norbert,
Have you done any new work on this project? Or have you moved on?
I am thinking of building a pellet extruder, but your solution of separating the melting and feeding portions is very elegant. The pellet extruder I though of does the melting and pushing simultaneously, but after seeing your work...... I don't think I have the best solution at the moment.... Thanks for sharing the hard work!
Me: I never give up on a project. Sometimes it just takes some time to develop new ideas before continuing. I am close to start over with a new version - stay tuned!
This extruder design works because of the properties of my raw material: The crushed plastic consists of particles being clearly smaller than pellets and having a large distribution of grain sizes. That enables the material to get as compact as it must be to work with the "only cold side pushing" technique.
You never have "the best" solution. Its good enough if it works!
----------------------------------------------------
Seite: technics-machines-3D-printer-Granule-Extruder-V3_ge.htm
Datum: 2022.04.07 17:02:20 (UTC+1)
Name: Johannes Ludwig
Kommentar:
Hi Norbert, all right, thanks a lot for your feedback.
Me: You're welcome and stay patient!
----------------------------------------------------
Seite: technics-machines-3D-printer-Granule-Extruder-V3_ge.htm
Datum: 2022.04.04 19:45:19 (UTC+1)
Name: Johannes Ludwig
Kommentar:
Hi Norbert, sorry for bothering you again. I want to ask whether there is eventually already any part which might be ready so that I could start doing something. Or eventually purchase of raw material. I saw last time that you worked with a piece of glass. This one for examples takes me probably long to purchase or make myself. Thanks and best regards.
Me: You would really have asked Carl Benz to sell you a wheel so that you can built a Mercedes before he had finished his work?
To make the extruder really work, the design of each part depends on the design of all other parts. Not until the whole thing extrudes plastic at a constant, predictable rate I can say what each part must look like. I have redesigned all of them more than once. Be patient...
----------------------------------------------------
Seite: technics-machines-3D-printer-Granule-Extruder-V3_ge.htm
Datum: 2022.04.02 10:16:45 (UTC+1)
Name: Johannes Ludwig
Kommentar:
Hi Norbert, thanks a lot for your fast feedback. I try to be patient :-) I am very exited for V4. I cross the fingers and wish you good luck, success and fun for the further developement. Your work is very valuable.
Me: You're welcome!
Must go back to my workshop, now...
----------------------------------------------------
Seite: technics-machines-3D-printer-Granule-Extruder-V3_ge.htm
Datum: 2022.04.01 20:41:48 (UTC+1)
Name: Johannes Ludwig
Kommentar:
Hi Norbert, hope you are fine. On January 6th you mentioned that you are working on an extruder design which is meant to be machined. I just want to ask if you have any news on this.
In the meantime I have bought a Anet A8 Plus Printer in order to modify the extruder.
Thanks and best regards
Johannes
Me: During the past weeks/months I have indeed machined core parts for the new design, but I also had to redesign those core elements more than once to make that new extruder work same as the proof of concept prototype V3. It still isn't where it should be, so there is more work to be done. I will of course post an update when V4 works fine. Be patient, creating something totally new usually breaks any schedule given ;-)
----------------------------------------------------
Seite: technics-machines-3D-printer-Granule-Extruder-V3_ge.htm
Datum: 2022.03.28 12:22:00 (UTC+1)
Name: Steven
Kommentar:
Is a steel pipe (10mmx8mm) an alternative to the PTFE-tube?
Me: As told in the video, the PTFE tube is to reduce friction with the walls and the friction of steel on the granules is much, much higher than that of Teflon.
----------------------------------------------------
Seite: technics-machines-3D-printer-Granule-Extruder-V3_ge.htm
Datum: 2022.02.14 07:34:37 (UTC+1)
Name: Urs Peter
Kommentar:
Hallo Norbert
Hast du mittler weilen schon andere Zucker Konstellationen versucht als Sacharose? Ich hätte da noch ein paar Ideen. die allenfalls hilfreich sein könnten. Jedenfalls bin ich auch so schon fasziniert von Deinen Ergebnissen. Für einen möglichen Austausch kannst du dich gerne an mich wenden. mailto://urs.peter@hug-familie.ch
Grüsse aus der Schweiz
Me: Zunächst gilt es, den Extruder weiter in Richtung Serie zu entwickeln, das beansprucht meine ganze Zeit. Das Ding soll in erster Linie ja Standard-Kunststoffe wie PLA, PET, ABS und dergleichen recyclen können. Zucker steht daher nicht allzu weit oben auf meiner Liste. Mehr zum Extruder gibt's (hoffentlich) demnächst.
----------------------------------------------------
Seite: technics-machines-3D-printer-Granule-Extruder-V3_ge.htm
Datum: 2022.01.27 07:00:56 (UTC+1)
Name: Johannes Ludwig
Kommentar:
As you already announced the printer Zonestar QR2 is no longer available. Unfortunately I could not find a used one neither. Therefore I have to look for a different model. If I understand correctly the double nozzle is no criteria, right? I guess one of the biggest challanges will be to bring the stepper motor which originally drives the filament to another speed in order to drive the granulate feeding scroll, right? How can the speed be adapted? Is it possible by a slicer or only by hardware?
Me: If you are looking for a cheap printer with highly accessible components, you can also buy an A8 or A6 ot printers like that. I have listed available models in a table on my chapter Shopping tips.
You can tune the extruder feedrate in your slic3r with the "Extrusion multiplier". You might have to increase the max extruder speed as well, which is done through the printer menue or through Gcode commands (if the printer firmware accepts this).
If your extruder still isn't fast enough, you can cut the M2 and M3 pin of the motor driver to force half step mode.
----------------------------------------------------
Seite: technics-machines-3D-printer-Granule-Extruder-V3_ge.htm
Datum: 2022.01.07 13:14:22 (UTC+1)
Name: Johannes Ludwig
Kommentar:
I would like to start asap. Therefore I will try to recreate your extruder version 3. I am really so thankful that you have done this valuable developement for us. Thank you!!
Me: Okay, keep me updated and I'll try to assist if you stumble over details.
----------------------------------------------------
Seite: technics-machines-3D-printer-Granule-Extruder-V3_ge.htm
Datum: 2022.01.06 16:55:00 (UTC+1)
Name: Johannes Ludwig
Kommentar:
Thanks a lot for your fast response. Can you estimate by when your machined extruder will be available? Sorry for asking, but this info would be helpful to understand if it makes sense to start with building your version 3 or waiting for your machined version.
Me: How long can you wait? Whenever you create something that hasn't been done before, estimating a schedule makes rarely sense. I hope to make it run the next three months...
----------------------------------------------------
Seite: technics-machines-3D-printer-Granule-Extruder-V3_ge.htm
Datum: 2022.01.06 16:07:15 (UTC+1)
Name: Johannes Ludwig
Kommentar:
Hi Norbert, thanks a lot for your amazing research work and the fantastic open source project you are giving to us. I intent to build your extruder. It is my dream to feed it with residual plastic, collected in nature. I own an Anycubic i3 Mega X printer. This one I would keep in original condition. However for your granulate extruder I would purchase another printer. Can you recommend a specific model?
Thanks and best regards
Hannes
Me: The only printer I have made the extruder work with, yet, is the Zonestar. This type of kit printer is good for experimentation due to the good accessible mechanics and mainboard. Today I have updated my column Shopping tips that lists a couple of these kit printers (the Zonestar seems to be no longer available).
Version 3 is a proof of concept design. So if you make a copy, be prepared for a rumble ride to (eventual) success. I am currently working on an extruder design that is meant to be machined (I have started one of my CNC routers). If you can wait, you might get something better suitable for processing waste plastics. If you want to start now with this version, keep me updated!
----------------------------------------------------
Seite: technics-machines-3D-printer-Granule-Extruder-V3_ge.htm
Datum: 2021.12.12 15:19:12 (UTC+1)
Name: Corbit
Kommentar:
Hi,
cool work!
Is it possible to directly process wood?
I have something like a woodpaste in mind. Made of sawdust, woodchips etc.
It would be amazing to have pure wood processed for objects like insect hotels or bird feeding stations/bird houses which can be left in the nature.
Me: Thanks! Wood is no thermoplast: It doesn't get soft when heated.
Insect holtels are made from waste materials or things you find in nature (at least that's how I do it), no need for a 3D printer. For birdhouses you should also get quicker results by cutting and nailing waste wood.
----------------------------------------------------
Page: technics-machines-3D-printer-Granule-Extruder-V3_en.htm
Date: 2021.10.20 14:46:57 (UTC+1)
Name: Conrad Hoshall
Comment:
Very excited to see this new iteration. Last night I melted my home made pellet extruder and I was looking for your v2 video inspiration when I saw this one 🙂.
Excited to see your research on granules preparation.
God bless
Me: Thanks! Would be nice to see details of your extruder, even though it got damaged.
More videos about my extruder will follow, the next one shows the construction pinciples in more detail. Stay tuned!