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Plastic bottle strip 3D printer project
| By Michigan Tech's Open Sustainability Technology Lab.
Wanted: Students to make a distributed future with solar-powered open-source 3-D printing.
Idea: Open Hardware for High Value Recycling of PET Bottles
Use simple 3D printable+utility blade stripper (like this one) to turn PET bottles into strips, microweld them together and then make a 3D printer extruder/driver capable of printing with the strips automatically. This will cut down on the embodied energy of 3D printing with recycled materials even further - as you can cut out the filament forming step with the recyclebot used for normal cylindrical FFF printing.
- Initial 3D printed version of PET_Bottle_Shredder
Background on strippers
|Commendably awesome Russian instructional video of PET strip making and applications|
|Uses heat gun to apply strips as binding for construction.|
|Even more awesome|
|6 washers, 2 wood screws, scrap wood and a razor blade.|
- automate stripping and spooling (consider simple single motor assembly for doing both
- create microwelder to butt weld the end of the strip to the beginning of the next one
- create a direct drive extruder capable of printing PET that can handle PET strips
- 3D print demonstration object from bottle
To be really awesome
- automate end detection and isolation (See MOST Quality Control on Recyclebot)
- solar power it
Data to collect
- measure total mass of bottle and percent recovered in strips
- measure energy use for all steps
- measure time for all steps