{"id":59047,"key":"3D_printed_PET_bottle_shredder","title":"3D printed PET bottle shredder","latest":{"id":1188525,"timestamp":"2025-09-18T23:48:06Z"},"content_model":"wikitext","license":{"url":"https://www.appropedia.org/Appropedia:Copyrights","title":"CC-BY-SA-4.0"},"source":"[[File:Shredder.jpg|thumb]]\n\n{{Project data\n| authors = User:Kemyszka\n| years = 2014\n| made = Yes\n| replicated = No\n| cost = USD 0.52\n}}\n\n{{777 notice}}\n\nIncluded 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.\n\n== Bill of Materials ==\n\n[[File:Simple Cutter.png|thumb|Simple Cutter]]\n\n[[File:Simple Cutter v2.png|thumb|Simple Cutter V2]]\n\n[[File:Cutter.JPG|thumb|Printed Simple Cutter]]\n\n* 3-D printer\n* OpenScad\n* PLA filiment\n* Single sided razor blade\n* 2 M3x6mm screws\n* 2 M3 nuts\n\nFiles:\n\n* [[File:HandBottleCutter.scad]]\n* [[File:HandBottleCutterv2.scad]]\n\n== Tools needed ==\n\n* [[Delta Build Overview:MOST|MOST Delta RepRap]] or similar RepRap 3-D printer\n* OpenScad or other Cad software [https://www.openscad.org/ http://www.openscad.org/]\n\n== Skills and knowledge needed ==\n\n* Basic knowledge of your 3-D printer and software used to make the model.\n* Proficiency with a slicer program and some basic hand tool knowledge.\n\n== Technical specifications and assembly instructions ==\n\n# Download the files listed above\n# Prepare your printer and load the.stl file and slice into a.gcode file\n# Print cutter and clean any flash on the cutter slots\n# Attach razor blade via the 2 M3 screw slots\n\nPrint time: 2 hours for simple cutter at 20% infill\n\nAssembly time: amount of time it takes to attach razor blade, approximately 2 minutes\n\n=== Common problems and solutions ===\n\nThe cutter slots may not print fully open and will need to be trimmed with a razor blade. Cutter slots may not also print with even opening spacing.\n\n== Cost savings ==\n\nHand cutter:\n\n* 29.58 grams of filament and approximately 120 minutes\n* $0.52 per cutter assuming filament costs of $20/Kg + whatever you value the time to set the print up at\n\nCommercial equivalent:\n\n* No such thing exists\n\n== References ==\n\n* My own measurements of razor blade\n* http://www.utsumi.com.br/pet/English/filetador/index.html\n* https://web.archive.org/web/20160222000558/livedebris.org/Photos/Art%20photos/Tutorials/bottle%20cutter%20tutorial.pdf\n\n{{Page data\n| keywords = 3D printing, osat, plastic shredder, recycle, pet bottle, plastic\n| sdg = SDG12 Responsible consumption and production\n| published = 2014\n| organizations = MTU, Michigan_Tech's_Open_Sustainability_Technology_Lab, MY4777\n| license = CC-BY-SA-3.0\n| language = en\n| description = Turn PET bottles into shredded plastic for reuse. Appropedia offers step-by-step help to build your own 3D printed shredder.\n}}\n\n[[Category:How tos]]\n[[Category:3D printing]]\n[[Category:OSAT 3D-Printable Designs]]\n[[Category:Recycle]]\n[[Category:Plastic]]"}