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we're gonna see how to recycle milk jugs and soda caps into filament
by melting them with the heat of a cheap soldering iron

you need:

  • one empty CO2 cartidge
  • one soldering iron
  • insulating material (ex rockwool)
  • one piston that fits inside the CO2 cartidge
  • a vice or some clamps

Step 1: Manual Bottle Extruder With a Solder Iron

i wanted to know if i could recycle HDPE (milk bottle) at home so i made a ghetto hot end with a solder iron, clamped a CO2 cartidge on it it finaly melt and i got 5 mm of rough and strong filament by pressing with a piston tool i need a mechanical process to get a regular filament i can make pellets again with it for the moment :) i'll also need more heat to make the hdpe more fluid and make the extrusion smoother and maybe some insulation on the hot end.

Step 2: ​DIY HDPE EXTRUDER (from the Ghetto)

recycle your milk jugs and many more things into 3D printable filament

i've hacked a solder iron to make my heating source,60W !!! way more powerfull than my first attempt my auger is made of a 15 mm wood drill bit, my electric drill and a vice i made about 3 meters of filament with 1.5 grinded bottles and many losses the non regular diameter goes from 2 to 4 mm.

Step 3: Step 3 : Rewind the Heating Filament and Add Motor

i rewound the filament directly on the metal tube to increase the heating
it works , a bit too much i'll have to moderate it
i also added a support structure made of wood and a drill motor to run the drill bit anticlockwise

bottle extruder

<p>Impressive. I'm sure you could mold it into virtually any shape you'd want or need. Bravo!</p>
<p>This is really great!<br><br>As for your temperature problem, you should be able to find a variable temperature soldering iron. Then you could experiment with different temperatures until you find the ideal setting.<br><br>Have you tried using any of this filament in your 3D printer or are you not yet at that stage?</p>
<p>That's a really good way to reuse plastic! Would you get better heat transfer if you used some heatsink goop (that white cream) or solder between the iron and cartridge?</p>
<p>Our local garbage collection company has donated to our city park benches where the traditional wood parts are made with lumber from recycled plastic jugs. They could probably take a direct nuclear attack and remain standing. I always thought it would be great to use this stuff diy. Thanks for a great start!</p>
<p>This is VERY CLEVER. Thanks for sharing.</p>

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