3D printing with recycled material

Hi Folks,

I was wondering if people have good recommendations of projects/initiatives/communities related to taking waste material (plastic bottles, old prints that did not workout, etc) and using them as stock material for 3D printers?

I have seen a couple of things online, but it is hard to tell how much of a hassle they are to set up and if they really make for practical applications? (currently I am in a workplace with 6 filament printers that are used a lot for prototyping, so much material gets printed, tested and discarded :cry: )

@hikinghack I see from the Dinacon videos and talks that you guys have been working with this? Any pointers/tip?

@jpearce also had a paper a while back if I am not mistaken describing and extrusion system?

So far I have seen:

precious plastics Which I guess we could use some of the machinery to prepare the plastic for re-printing.

Filabot but they seem a bit costly and not open source

Recreator3D - for turning PET bottles into filament

Polyformer - also for turning PET bottles into filament

Thanks in advance for your comments!


We do it two ways – 1) a 3D printable recyclebot to make filament https://www.appropedia.org/Recyclebot

now with computer vision control:

and 2) direct extrusion FPF
with an OS GigabotX if you just want to buy something: https://www.appropedia.org/Fused_Particle_Fabrication_3-D_Printing:_Recycled_Materials’_Optimization_and_Mechanical_Properties

You can make one from a cheap FFF printer:

or you can try a hangprinter waste extruder (this is our first -and is only good for really large things -a more detailed DIY and tighter version is on the way)

For both of them you need a grinder


I really like this one:


We never did it but it could be a great idea to test it in south sudan.

John Bior Ajang
Open Tech Engineer
Peace and human rights activist
Producer (videos and audios)
Radio presenter at Radio Jonglei FM
Founder ATAKA Hub South Sudan
+211920242512 WhatsApp
+211925033436 telegram

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We have messed around with modifications to build a hopper and screw into your 3d printer to go the pellet printing route

And it was
-finnicky to print with
-jammed a lot

So i was blown away with how easy it was to go the pullstruder pet filament route!
We built a recreator3d at dinacon and it worked great in sri Lanka, and we just built a second one in Panama which is also awesome! I just modifies a $100 used creality ender i got off ebay.

I also built a device to more precisely and efficiently turn pet bottles into strips (rather than the method with a non motorized blade) and that’s made things quite easy in my opinion!