PET filament maker
mikethebee
daprigoo
ingenious
When changing my password due to the thingiverse data leak I spotted https://www.thingiverse.com/thing:4980169 that looks interesting in the light of Alex G's work a while back. --
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Alex Gibson
It’s a smart system! Hoping to build one if the office move goes through successfully!
Also hoping to get the filament extruder going at that point.
Meanwhile…
https://twitter.com/alexgibson3d/status/1455215843751649283
Cheers
Alex Gibson
+44 7813 810 765 @alexgibson3d 37 Royal Avenue, Reading RG31 4UR
admg consulting
edumaker limited
· Project management
· Operations & Process improvement
· 3D Printing
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Richard Ibbotson
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Alex Gibson
In principle yes. However Cristóvão (and precursors) seems to have achieved a very good, reproducible setup for producing a reasonable consistency of filament – so the extra step is adding a worthwhile amount of value to the quality of the final print. Also it’s splitting the job up into reasonable stages – during filament production there is a certain amount of manual labour to cut up the bottles, while the filament tensioning is done automatically (which improves the diameter consistency). By the time you’re done cutting up the next bottle it’s probably time to feed it into the machine. Then the actual 3D print can be a more hit print and relax process.
In theory the fewer times you re-melt the plastic the better for the final product – but anything that improves consistent printing reduces risk of failure and waste.
Adrian Bowyer just retweeted a nice design of direct pellet extruder for Průša –style printers – it stands out as being particularly capable of handling irregular grinds of print waste, not just factory pellets. Considering making one to try sooner, as I have plenty of nicely ground PLA!
Cheers,
Alex Gibson
+44 7813 810 765 @alexgibson3d 37 Royal Avenue, Reading RG31 4UR
admg consulting
edumaker limited
· Project management
· Operations & Process improvement
· 3D Printing
To view this discussion on the web, visit https://groups.google.com/d/msgid/tvreprapug/1AC43CDF-C0A9-44CA-90C9-406A2CEBF614%40btinternet.com.
daprigoo
Took a while to find the reference in Adrian's twitter, then realised I had already seen the material;
video - https://www.youtube.com/watch?v=-LX8SBa-q8M
detail - https://homofaciens.de/technics-machines-3D-printer-Granule-Extruder-V3_en.htm
and -
https://hackaday.io/project/181165-my-machinery-2021-direct-granules-extruder
A key element will be the shredding, the author uses a blender
and will be posting details .. sometime.
On balance I would prefer to convert pellets to filament then use
the filament later.
David
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