PET Bottle Shredder
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Abstract
Included below is three different designs for PET bottle shredders currently designed for 20oz soda bottles but easily expandable for use with 2 liter soda bottles. The first design is a simple hand held shredder which is the simplest design and uses the least plastic. This makes this design ideal for areas which have access to a 3D printer but which filament might not be as readily available. The second design adds a bottle holder to the simple hand held shredder. This holder was added to possibly aid in efficiency. The third design is a hand cranked design which also uses a bottle holder and spools the cut filament. These shredders allow the use of the cut PET to be used in things like crafts and possibly for printing purposes.
Bill of Materials
- 3-D printer
- OpenScad
- PLA filiment
Tools needed for fabrication of the OSAT
- MOST Delta RepRap or similar RepRap 3-D printer
- OpenScad or other Cad software http://www.openscad.org/
Skills and Knowledge Necessary to Make the OSAT
- Basic knowledge of your 3-D printer and software used to make the model
Technical Specifications and Assembly Instructions
- Download the files listed above
- Prep your printer and load the .stl file and slice into a .gcode file
- Print cutter and clean any flash on the cutter slots
- Attach razor blade via the 2 M3 screw slots
- Print time is approximately but will vary with infill percentage
- Assembly time we be the amount of time it takes to attach razor blade
- Approximatly 2 minutes
Common Problems and Solutions
Cost savings
Estimate your costs
- Hand Cutter
- 3117mm of filament approximately 35 minutes
- $0.28 per set
- Hand Cutter V2
- 1539mm of fillament approximately 18 minutes
- $0.14 per set
Find a commercial equivalent
- No such thing exists
References
- My own measurements of razor blade
- http://www.utsumi.com.br/pet/English/filetador/index.html
- http://www.livedebris.org/Photos/Art%20photos/Tutorials/bottle%20cutter%20tutorial.pdf