###### Tags: `Projet`

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<img src="https://i.imgur.com/aoPdGjX.png" width="30%" height="30%"/>

# Shredded Plastic Extruder
### **3D PRINT DIRECTLY WITH<br>SHREDDED PLASTIC WASTE<br>WITHOUT USING A FILAMENT**

<br><br>

:::info
### Precious Plastic Shredder<br>([Blueprints and CAD files are here](https://preciousplastic.com/en/videos/build/shredder.html))<br>[or use a blender !](https://youtu.be/KuuKfedPNcM)<br>+<br>3D printer<br>+<br>**Shredded Plastic Extruder**<br>**(Instructions below)**<br>**=**<br>**COMPLETE CYCLE OF**<br>**PLASTIC WASTE RECYCLING**<br>
:::
<br><br>
<br><br><br>
<br><br><br>

|||
| - |- |
|<center>source : mahor.xyz|<center>source : All3DP|

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| - |- |
|<center>source : precious plastic|<center>source : precious plastic|
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<br>

## <center>==Specifications==
:::info
* **Specifically designed to print directly with shredded plastic**
* **Max nozzle temperature : 300°C**
* **Capacity of 0.5 liter** (around ... g), expandable to 1 liter
* **Easy to manufacture, use, modify and repair**
* **Compatible with the most popular 3D printers** : Prusa I3, creality cr-10, Anet A8, ...
* **Under GNU-GPL licence**
* **Works with most everyday plastic waste** :
* Packaging, 3D printing, broken objects, ...
* PP, PE, PC, PLA, PET, ABS, ...
:::
<br>

## <center>==Bill of material==
:::info
* **[Mahor.xyz Pellet Extruder V3](https://mahor.xyz/es/producto/pellet-extruder-v3/)**
* 1 x Pellet screw Ø8x80 mm [modified]
*Extended by 10 ? mm, with a arc welded 8 mm diameter drill bit*
* 1 x Barrel support [modified]
*The 4 holes of the support were tapped in M4*
* U-bracket for the barrel support [modified]
*The 4 holes of the bracket have been drilled in 4 mm diameter*
* 1 x Motor support
* 1 x Barrel Ø20x50 mm
* 1 x Nema 17 gear motor
* 1 x Coupling Ø20×30 mm
* 1 x Nozzle Ø0.8 mm
* 1 x Cartridge heater 50w 12v
* 1 x Thermistor 100k
* 2 x Blowers 40x20 mm
* 6 x Screws M3x20 mm
* 4 x Screws M3x10 mm
* ~~4 x Spacers M3x60 mm~~
<br>
* **Printable parts** - Download on thingiverse (link link)
* 1 x Extruder part
* 1 x Back part
* 1 x Hopper part
* 1 x Spiral part
* 1 x Fan duct part
* 1 x Lid part
* 1 x Plate part
* 1 x Extension part (optional)
<br>
* **Additional screws**
* 4 x Screw M4x5 mm
* 4 x 10mm self-drilling screws, to fix the plate to the extruder
* 2 x 10mm self-drilling screws, to fix the fan duct
<br>
* **Additional parts**
* 1 x Nozzle Ø0.4 mm (optional)
* 1 x Thin aluminum sheet, a soda can will do the trick - 50x43 mm
* 1 x Small plastic window, cut in transparent packaging - 25x30 mm
* 1 x Small metal rod (taille de la petite tige ??!)
<br>
* **Fan on the hopper** (optional)
* 4 x Screw M3x10 mm
* 1 x Fan 12v DC 40x40x10 mm
* 1 x male/female two poles connector
* 1 x Fine grid for the fan - 40x40 mm
<br>
* **Aluminum sheet, plastic window and fan grid dimensions :**<br><br>


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[(+)](https://i.imgur.com/aJafVss.png)<br>
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:::
<br>

## <center>==List of tools==
:::info
* Hex screwdriver set
* Welding machine
* Phillips screwdriver
* Tapping tool set
* Angle grinder
* Dremel
* Extra strong glue
:::
<br>

## <center>==Instructions==
:::info
|1. Print all the parts and remove the supports|2. Tap the four holes of the barrel support|3. Arc welding the pellet screw with 10 mm of a 8 mm diameter drill bit|
|-|-|-|
|<center>[(+)](https://i.imgur.com/YBkcWrt.png)|<center>[(+)](https://i.imgur.com/YBkcWrt.png)|<center>[(+)](https://i.imgur.com/YBkcWrt.png)|

|4. Drill the four holes of the U-bracket in 4 mm diameter|5. Prepare the screws|6. Cut the grid and aluminum plate to size|
|-|-|-|
|<center>[(+)](https://i.imgur.com/YBkcWrt.png)|<center>[(+)](https://i.imgur.com/YBkcWrt.png)|<center>[(+)](https://i.imgur.com/YBkcWrt.png)|

|7. Cut the plastic sheet and glue with the printed back part|8. Assemble the back part with the extruder part and the barrel support|9. Prepare the small metal rod and assemble with the spiral part|
|-|-|-|
|<center>[(+)](https://i.imgur.com/YBkcWrt.png)|<center>[(+)](https://i.imgur.com/YBkcWrt.png)|<center>[(+)](https://i.imgur.com/YBkcWrt.png)|

|10. Assemble the motor with the support, the spiral part, coupling and the modified pellet screw|11. Assemble the motor and screw unit with the extruder part|12. Install the fans and the barrel with resistor and thermistor|
|-|-|-|
|<center>[(+)](https://i.imgur.com/YBkcWrt.png)|<center>[(+)](https://i.imgur.com/YBkcWrt.png)|<center>[(+)](https://i.imgur.com/YBkcWrt.png)|

|13. Install the aluminum sheet in the extruder part|14. Pass the cables neatly using a few hose clamps|15. Assemble the hopper part with the fan and the grid (optional)|
|-|-|-|
|<center>[(+)](https://i.imgur.com/YBkcWrt.png)|<center>[(+)](https://i.imgur.com/YBkcWrt.png)|<center>[(+)](https://i.imgur.com/YBkcWrt.png)|

|16. Install the two nuts on the extruder part and assemble with the hopper|17. Screw the fan duct to the extruder|18. Adjust the plate if necessary and attach it to the X-axis carriage of the printer|
|-|-|-|
|<center>[(+)](https://i.imgur.com/YBkcWrt.png)|<center>[(+)](https://i.imgur.com/YBkcWrt.png)|<center>[(+)](https://i.imgur.com/YBkcWrt.png)|

|19. Attach the extruder to the board and connect it to the printer, it's ready !|
|-|
|<center>[(+)](https://i.imgur.com/YBkcWrt.png)|

:::
<br>

## <center>==Firmware and slicer settings==

:::info
### Firmware

* EEPROM

<br>
:::

:::info
### Slicer

* Vitesses

* Retractation
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:::
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## <center>==Tips and tricks !==
:::info
* **Sift the shredded plastic with a 4-5 mm sieve**

* **Purge Gcode (after heating to the melting point)** :

    scsc
    sccscs
    scsc

:::
<br>

## <center>==Identify correctly the different plastics !==

:::info
|Type of plastic|ID code|General Properties|Common uses|
|-|-|-|-|
| | | | |
|**PLA**<br> Polylactic acid|<center>7 (other)|Derived from renewable biomass|3D printing, food packaging|
|**HDPE**<br> High density polyethylene|<center>2|Excellent moisture and chemicals resistance ; rigid and strong ; soft waxy surface ; permeable to gas|Milk and non-carbonated drinks bottles, construction pipe, furniture, food packaging, shampoo and mouthwash bottles, household fences, plan pots|
|**PP**<br> Polypropylene |<center>5|Excellent resistance to heat, chemicals, grease and oil ; strong and tough ; versatility ; floats in water|Bottle tops, biscuit wrappers, ketchup and sirup bottles, refrigerated containers, plant pots, drinking straws, hinged lunch boxes|
|**PC**<br> Polycarbonate|<center>7 (other)||
|**PET**<br> Polyethylene terephthalate |<center>1|High heat resistance, clarty and toughness, solvent resistant|Mineral water bottles, soft drink bottles, medicine jars|
|**ABS**<br> Acrylonitrile butadiene styrene|<center>7 (other)|||
:::
<br>

## <center>==Temperatures and adhesion==

:::info
|Type of plastic|Melting point|Adhesion|
|-|-|-|
| | | |
|**PLA** <br> Polylactic acid|**190 - 210°C**|**Easy**<br>Heated bed to 60°C (optional)<br> Painter's tape, Glue stick, Glass plate
|**HDPE**<br> High density polyethylene|**230-260°C**|**???**<br>|
|**PP** <br> Polypropylene |**220 - 230°C**|**Hard**<br>Heated bed to **90-100°C**<br> Polypropylene sheet,<br> Ultimaker adhesion sheets,<br> SmartStick ?|
|**PC** <br> Polycarbonate|**260 - 310°C**|**???**<br>Heated bed to **80 - 120°C**<br>Commercial adhesive,<br> Glue stick|
|**PET** <br> Polyethylene terephthalate |**230 - 250°C**|**???**<br>Heated bed to **75 - 90°C**<br> Glue stick, Painter's tape
|**ABS** <br> Acrylonitrile butadiene styrene|**220 - 250°C**|**Average**<br>Heated bed to **95 - 110°C**<br>Kapton tape, ABS Slurry
:::
<br>

## <center>==Budget==

:::info
* [Mahor.xyz Pellet extruder V3](https://mahor.xyz/es/producto/pellet-extruder-v3/) : 350 €
* Additional parts (fan, connector, printable parts, ... ) : 20 €
* 3D printer (Creatily CR-10, Anet A8, ... ) : 200 - 300 €
* [Precious Plastic Shredder](https://bazar.preciousplastic.com/?category=shredder) : 600 - 800 €
* **Total :** **< 1500 €**
:::
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## <center>==Thanks==
:::info
This project is based on the work of [**Mahor Muniz** (mahor.xyz)](https://mahor.xyz), without his pieces, nothing of all that would be possible. I simply redesigned the 3D print parts from [the [**Eben Farnworth's model**](https://www.thingiverse.com/thing:3032188) and documented the project.
<br>

I would also like to thank [Dave Hakkens](https://davehakkens.nl/) for the [**Precious Plastic Project**](https://preciousplastic.com/), his shredder is the first step in the whole process.
:::
<br>

## <center>==Credits and contacts==

:::info
A project led by Quentin Orhant, member of IDLV (Indiens Dans La Ville), collective of french artists. Only the 3D printed part is a real innovation, inspired by the project of Eben Farnworth, the metal parts come from the website mahor.xyz.
<br>
* **IDLV's website** : https://idlv.co
* **Quentin Orhant's portfolio** : https://cirion.tumblr.com
* **Contact** : [e-mail]
:::

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## <center>==Licence==
:::info
The 3D printed parts are made from [the Eben Farnworth's model](https://www.thingiverse.com/thing:3032188) ([coloursofdiscovery on thingiverse](https://www.thingiverse.com/coloursofdiscovery/about)), under [GNU GPL license](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html), in case of modification, the result must be under the same license.
:::
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<img src="https://i.imgur.com/2DAU0kH.png" width="30%" height="30%"/>
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