Cost and time for making 3D printer filament

I just wanted to know if someone here successfully implemented the process for converting old plastic to 3d printer filament.

If yes would really appreciate any nsight on following queries:

  1. Approximate cost of production per kg or lbs for you
  2. Approximate batch quantity you were able to achieve
  3. how much time did a single batch it takes to process.

any insights would be highly appreciated.




To make filament you would need a device to “pull” the filament coming out of the extrudeur to get a precise diameter. This device does not seem to be in the scope of the next V4 PP. I am working on a device which will be relatively cheap to acheive this. I put a photo of my first proto, which needs to be improved, especially mecanically. When it’s fully working i will post a video, but this will not be before one or two months. Based on arduino and cheap stepper motors.