PullStruder M1.2

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

Build Tutorial: 
 

Tips and Tricks: 
 

Parts List
1.75mm Drill Bit: https://amzn.to/3QP1AUL
Silicone Glue: https://amzn.to/3G7ZPNL
Heater Block and Nozzle: https://amzn.to/3Tb5o5R
Power Cord: https://amzn.to/47U2ZAW
Heating Element: https://amzn.to/3MROO6Q
AC to DC Converter: https://amzn.to/3RhbLln
Motor Controller: https://amzn.to/3STOnga
Motor: https://amzn.to/416dmiB
1.5in Corner Bracket - 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.