The goal of this project was to create a machine that can recycle PET bottles into filament!

Build Tutorial: 

[https://youtu.be/HL32tasaQk8](https://youtu.be/HL32tasaQk8)

Tips and Tricks: 
[https://youtu.be/Bi2J-lV_peM](https://youtu.be/Bi2J-lV_peM)

Parts List
1.75mm Drill Bit: [https://amzn.to/3QP1AUL](https://amzn.to/3QP1AUL)
Silicone Glue: [https://amzn.to/3G7ZPNL](https://amzn.to/3G7ZPNL)
Heater Block and Nozzle: [https://amzn.to/3Tb5o5R](https://amzn.to/3Tb5o5R)
Power Cord: [https://amzn.to/47U2ZAW](https://amzn.to/47U2ZAW)
Heating Element: [https://amzn.to/3MROO6Q](https://amzn.to/3MROO6Q)
AC to DC Converter: [https://amzn.to/3RhbLln](https://amzn.to/3RhbLln)
Motor Controller: [https://amzn.to/3STOnga](https://amzn.to/3STOnga)
Motor: [https://amzn.to/416dmiB](https://amzn.to/416dmiB)
1.5in Corner Bracket - [https://amzn.to/489lKQk](https://amzn.to/489lKQk)
10 - M3 x 8 mm Screws
3 - M3 x 20mm Screws
1 - M3 x 40mm Screw
M3 Nuts, washers, lock washers

Now that you turned a bottle into filament its time to start printing. In my experience PET is actually a very friendly filament if you print slow and hot. I would recommend using an all metal hotend, as PTFE lined hotends will start to fail around 250C.

Settings:

267C nozzle

80C bed

40mm/s max printing speed

At least 20% Gyroid Infill

1 mm @ 60mm/s retraction (direct drive extruder)

30% cooling after the first layer

Z lift/hop .2mm

Increase extrusion multiplier (determine values experimentally)

Although I have not ran extensive tests on these settings, they have been working great for me so far. They should serve as a good starting point for you. If you find any nice tweaks, feel free to let me know.