The file 'PET Mini-shredder 3D Printer Model' is (stl,scad) file type, size is 72.0KB.
Version 2 is here!
(see at the end of the description)
This is more or less a copy of the "Mini-shredder/Mini-filetador" from Takashi Utsumi
It is designed for wider blades:
Width: 18mm - Thickness: 0.5mm
The cutting edge length: 100mm
(the whole paralellogram is longer)
Links to the original:
http://www.utsumi.com.br/pet/English/filetador/index.html
http://www.utsumi.com.br/pet/English/dicas/minifiletadores_como_fazer.html
http://www.utsumi.com.br/pet/English/
Possible uses:
1) Weaving -- Make cool woven objects like those described on Utsumis pages.
2) Directly feed it into a hot end (to be designed) for printing (The melting point of bottle-PET is below 260°C edit: I sucessfully printed with 250°C)
http://blog.reprap.org/2009/03/drink-bottle-feedstock.html
3) Feed it into into a re-extruder to make 3mm filament for bowden printers.
After some testing with version 1 it is clear that PLA is definitely not suitable - the friction heat cuts right through the plastic after just a few 10m of ribbon. ABS might work but I think an incorporated L-Alu-Profie will be better.
Edit:
Version 2 is aviable !
This one uses an Alu-L-Profile for feasable wear resistance.
You'll either need an aluminum-L-profile of the following dimensions or change the *.scad parameters.
width = 25mm; height = 15mm; (length = 135mm)
To make the production of the alu part easier a drilling & sawing template part is included.
PET_mini-shredder_Utsumi-v2-ALU.stl | 147.0KB | |
PET_mini-shredder_Utsumi-v2-GRASP.stl | 307.5KB | |
PET_mini-shredder_Utsumi-v2-TEMPLATE.stl | 220.0KB | |
PET_mini-shredder_Utsumi-v2.scad | 5.4KB | |
PET_mini-shredder_Utsumi.scad | 3.1KB | |
PET_mini-shredder_Utsumi.stl | 502.9KB |