Regarding the part cooling, maybe you can set a minimum layer time for the chimney. It seemed to still be partially melted while the next layer was being printed, which makes it sag. Very cool project!
Wow! Great work! Now I wonder if it would even help that much to have a custom machined screw which fit the bore perfectly. There doesn't seem to be that much performance left to gain.
Thanks! If you had a look at the previous videos of this series, you can see why a gap between bore and screw is essential to make this type of extruder work: The air must be able to escape. I am in the process of building an EDM machine to create more precise extruder tubes and screw couplers but will stick with the normal wood screws, because they do their job, are easy to source and cheap. Well, I still see room to boost the performance - stay tuned!
@@HomoFaciens Sugar doesn't melt anything like how plastic does. It starts decomposing before it melts. It would likely be some other extruder head if it works at all. I think it's been done as a powder bed type printer though.
@JeffDM I have done that with a previous iteration of this extruder: th-cam.com/video/ea2dfdTszqM/w-d-xo.html Will add some crystal inhibitor (e.g. citric acid) to make things better. Stay tuned!
Creating something that hasn't been done before doesn't happen over night. Give me some more time and the granule printer will become a replacement for (at least my own) filament printers.
I am using Prusa slicer. Flow rate is determined same as with filament: Print something and have a close look at the result. If underextrusion, raise the flow rate, if there is overxtrusion lower the flow rate. No rocket science needed.
Impressive!
Great progress ! 👍
Yes, definitely!
Regarding the part cooling, maybe you can set a minimum layer time for the chimney. It seemed to still be partially melted while the next layer was being printed, which makes it sag. Very cool project!
Thanks! If you'd like to print faster, you need better part cooling and I definitely want to print as fast as the extruder can deliver molten plastic.
Whow, mit diesen rudimentären mitteln so ein Ergebnis !!! Respekt
Danke! Rudementär ist der Extruder aber nicht. Ist doch alles dran, was man braucht, um kalte Körner als heißes Plastik herauszupresen ;-)
I was not expecting that. Impressive.
Wow! Great work! Now I wonder if it would even help that much to have a custom machined screw which fit the bore perfectly. There doesn't seem to be that much performance left to gain.
Thanks! If you had a look at the previous videos of this series, you can see why a gap between bore and screw is essential to make this type of extruder work: The air must be able to escape.
I am in the process of building an EDM machine to create more precise extruder tubes and screw couplers but will stick with the normal wood screws, because they do their job, are easy to source and cheap.
Well, I still see room to boost the performance - stay tuned!
You inspired me to make a sugar printer last year. Didn't work though😅. Glad to see a granular extruder now
I will also do sugar experiments with this iteration of my extruder design in the not too distant future. Stay tuned!
@@HomoFaciens Sugar doesn't melt anything like how plastic does. It starts decomposing before it melts. It would likely be some other extruder head if it works at all. I think it's been done as a powder bed type printer though.
@JeffDM I have done that with a previous iteration of this extruder: th-cam.com/video/ea2dfdTszqM/w-d-xo.html
Will add some crystal inhibitor (e.g. citric acid) to make things better. Stay tuned!
@@HomoFaciens sounds interesting, I'll definitely stay tuned.
Ты живой!) Долго ждал видео)
Creating something that hasn't been done before doesn't happen over night. Give me some more time and the granule printer will become a replacement for (at least my own) filament printers.
Trabalho incrível, parabéns!
What slicer are you using ... and how do you determine the flow-rate for granulates?
I am using Prusa slicer. Flow rate is determined same as with filament: Print something and have a close look at the result. If underextrusion, raise the flow rate, if there is overxtrusion lower the flow rate. No rocket science needed.
I wonder if there can be alternatives to retracting, like just lifting screw up and down rather than reversing it.
No need to make things complicated, Just some optimization in hardware design and stringing will be gone. Stay tuned to see the progress!
@@HomoFaciens cool :)