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3D Printer for PET particles, No filament.. ever

  • This topic has 22 replies, 9 voices, and was last updated 2 years ago by Anonymous.
David 3dseed

3D Printer for PET particles, No filament.. ever

28/08/2019 at 15:12

I thought I´d posted this in Foums before.. but couldn´t find it in the search..  so here goes again )

We have made a 3D Printer that uses PET bottle flakes.

Any interest in a complete system please message or email me
[email protected]
It´s in the Bazarr here  https://bazar.preciousplastic.com/en/listings/775954-3d-printer-and-grinder-that-uses-pet-flakes-directly

Videos here…https://www.youtube.com/user/DaveSpaget/videos

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29/08/2019 at 05:41

Looks interesting but I can not justify the price.  There is the Spanish guy who has a extruder that does the same thing for a couple hundred euro, and printer costs have fallen so far now days.


With the shipping cost it is more than buying a new lathe and 6090 cnc router combined.

29/08/2019 at 11:37

Hi Butte, thanks for your comments.
Yes, the majority of the cost is for the shredder from 3DEvo.. it works very well and can be used safely in schools with CE certification. I think it´s the best, fastest and smallest solution as the flake size is critical for the smooth flow of PET flakes through the 3d printer.
Our 3d printer is designed specifically for the Spanish guy Mahor´s extruder. We are partners in this and have made several major changes over three years to run directly from ground PET Bottles. The printer contains a Smoothieboard and high quality components that we have tested thoroughly.
For us, it´s the first modular system that people can use PET waste bottles to 3d print with.
It can run most types of plastic, though we prefer PET as we have tonnes of waste bottles and the prints are strong and transparent.
We still need to include an efficient flakes separator… but it´s coming soon..
With one Grinder it can feed about 5 x 3d printers, so with more sales we can get the price down.
Just the transport alone for a 50kg pallet shipment is expensive but it´s all we have to work with for now.
I hope this justifies the cost 🙂
I´m happy to answer all questions and thanks.

11/09/2019 at 09:06

Well done!
I am doing the same and actually I got the same shredder that you have.

I have done full process with extrusion of PLA from beer cup (see the image attached of the final object)
and my next step is the PET bottles

I’ll send an email to get in touch and share the process with you and see what is your process

Julien – Archiréel

11/09/2019 at 17:08

@archireel , Why not just post a description of what you are doing here and let the whole community learn something?

11/09/2019 at 22:56

Sure @s2019 I’ll do that as soon as I have something relevant from my side. But for now I have not tried yet PET and I am eager to learn too on that topic.

10/10/2019 at 12:20

We have big version of those

10/10/2019 at 16:06

Do you have available to buy?

12/10/2019 at 14:28

@leprint can you please explain the extruder head. What are the pink lines for? Could you show a picture of the whole machine.

12/10/2019 at 14:44

@leprint, looks great..!!    So are you are using Industrial granules or flakes made directly from the waste plastic ?

14/10/2019 at 17:50

@plastikfantastik, it’s a ‘mahor extruder’ as mentioned in the wiki about filament. Since it’s 300E for the whole thing, I ordered some alternatives from robodigg. I am not sure yet it pays out to get this cheaper. As for the required flake size (below 1mm), there is a grinder coming into PP’s portfolio (as addon for all). I just finished testing and it should see the light by November. For the 3d printer, we’re not sure we get one done but most parts are ordered and possibly over Christmas I can fiddle something out, as always : open source.

14/10/2019 at 19:13

Something like this is just what i’m looking for, so an open source design for a PP 3d printer would be amazing!

14/10/2019 at 19:33

The smoothieboard looks like an awesome piece of kit too

14/10/2019 at 20:02

@timberstar, ‘smoothie’, it is ! Perfect base to run this in big. I wired today a Nema23 on it and it’s stable and fast (fast enough), great thing to pave the way for printing boats and the like 🙂 I am just curious what to use as frame, holding the v3 extruder. Construction beams seem tempting but probably create too much bouncing or deflection; depends on whether you need a smoothi boat or wavy one 😉

14/10/2019 at 20:40

Its been 12months since we posted the video

We are OpenSource, that´s why you can buy the latest tested designs at http://www.mahor.xyz
Our Auger hot-ends are constantly improving.. you can put them on most 3d printers that you buy, or build 🙂

That´s why you can buy copies online..  but they are 12 months old…

15/10/2019 at 10:12

@occupypp It sounds like you are working on something similar to what I want to do, the PP extruder would make a great hot end for large scale printing. Would the smoothieboard run nema 34s?

15/10/2019 at 11:21

@timberstar, yes, you can connect any stepper driver (vimeo.com/115509540). I planned bigger printers over winter but first I’d like to see this in small as David’s printer which I consider one of the first successes for PET printing directly. However, I am documenting the findings and research on github (see ‘print-controller’ which will be just a layer on top of the ‘extrusion-controller’ which is needed by ‘injection controller’ – basically turning the v3 extruder into a small automated bench top factory). If you ‘star’ this on github – you will get notifications for each release and there is every second week something new 🙂

22/10/2019 at 14:02

You asking about extruder printer or Vase?

22/10/2019 at 14:06


The pink lines its water cooling. Machine is not finished yet.  Its normal drill extruder.

22/10/2019 at 14:10


For now we use industrial granulates but in future we want to print from scratchet bottles

22/10/2019 at 14:19

@ occupypp ..   are you really PlasticHub..  as it says on the GitHub account ?
Gunter is that you ?  Why do you keep swapping accounts all the time ?

22/10/2019 at 14:22

@leprint, ok …so it’s not the same is it ?
Pellet extruders have been around for years now.

22/10/2019 at 22:56

@3dseed, ask his majesty @davehakkens and his gang 😉

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