3D printing shredded failed prints with a prototype pellet extruder
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 Published On Sep 18, 2020

I have been trying to recycle waste 3D prints for some time now, so I jumped at the opportunity to borrow a prototype Bravo pellet extruder from Polylab. This video takes you through my experiences.

Plenty of hours went into this but ultimately I ran out of time to get it all working as I would like. My results here were mixed, but I think with more time things can be improved. The product will also inevitably be further developed, including documentation on slicer quirks and other aspects I struggled with.

I will continue to pursue pellet extruders such as this as well as filament making machines.

Thanks to Chris from Polylab for lending this extruder and for his support throughout testing.

Polylab website: https://polylab.org/

Thanks to Mark Mitchell from Proto Hub for his help selecting the HRC coupler for my shredder:   / protohubau  
Archimedes screw wiki article: https://en.wikipedia.org/wiki/Archime...
My first video on shredding plastic:    • Recycle waste 3D prints: Part 1 - Shr...  
My second video on shredding plastic:    • Recycling waste 3D prints with a Prec...  

0:00 Introduction
0:57 What is the Polylab Bravo? Interview with Chris Larkin
3:26 My current 3D print shredding setup
4:48 Unboxing and installation
8:39 Differences from conventional FDM 3D printing
10:40 Testing, results and troubleshooting
15:32 Conclusion

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