[[Category:Proposed_ProjectsClosed_Projects]]
== Description ==
Build a plastic recycling machine to make 3D printable filament for the [[Ultimaker]] and other people's printers.
* Ventilation preferable for ABS
== Parts needed ==
{| class="wikitable"
|-
! Part Name
! Description
! StateProgress! 3d model/images
|-
| TubeMain frame| Part where Main part holding all the material will flow troughparts together. Which material should we use ? (Aluminium/ (Stainless) steel) ?Also we will have to be able to dig holes to put the temp sensors inside.| Done| Needed (20mm internal diameter)TODO
|-
| AugerCoupler| Screw pushing Holds the materialmotor rotor and the screw together| '''Needs update''' with new motor rotor diameter (8mm)| Just bought [http://www.ebay.com/itm/20mm-Long-Combination-Wood-Auger-Drill-Bit-Carpenter/310775630556 one of those] on EbayTODO
|-
| Motorholder| Makes stuff moveHolds the motor (duh.)| Needed'''Needs update''' with 3 holes mounting instead of 4. Thickness needs to be checked for usage with new motor| TODO
|-
| Heating elementScrew holder| Nichrome wire ? Ceramic heaters ? Quite cheap on ebay.This will be controlled by a thermostat (when Aligns the tx is above a defined point we shut it down). Find a way to attach this (high-temp resistant tape ?) and isolate from the outside.| Bought 3.048m of G28 nichrome wire. |-| Thermometers| Get the internal temperature in different places of screw with the tube (rear, middle and nose for example).| Needed|-| Extrusion nozzle| Transforms the heated plastic into a regular filament suitable for the printer.| Needed|-| Cooling system| "From liquid May need more grease to solid in a trice !". Air/water/oil ?reduce friction| NeededTODO
|-
| Tube
| Brings the plastic pellets/parts into a heated nozzle. Makes plastic filament (theoretically). Also the nozzle is exchangable with other nozzle models to allow various diameters of filament to be made
|
| TODO
|}
* [http://reprapdelft.files.wordpress.com/2010/04/reprap-granule-extruder-tudelft1.pdf Filament recycling detailed research paper (noskill)]
* [http://usinette.org/projets/broyeuse-extrudeuse-domestique/ Broyeuse extrudeuse domestique (noskill)]
* [http://hackaday.com/2014/02/06/plastic-recycling-at-home-promises-a-revolution-in-local-plastic-production/ Plastic recycling machines built at low cost] == Schedule Progression ==* 2013/11/22 - Starting experiments :).* 2013/11/27 - Measure the temperature we can have with the current setup. Are there other ways to use the nichrome wire (on the extrusion head/on the tube/both) ? Also start experiments for the part that will transform HDPE into pellets (shattering vs melting i.e.). What's the best way to have both parts (recycling and filament making) in the same machine ? Also: plans, plans, plans - use a paper shredder to break used and new plastic into small bits.* 2014/01/17 - Added a metal top on the end with a 3mm brass extrusion nozzle soldered to it. Next step is adding motorization and automation (i.e. temperature regulation)* 2014/01/30 - A more polished version of the metal parts will be made by [[User:noskill]]'s school polymecanics. The heated part and the nozzle will be removable.* 2014/03/10 - Received the stepper motor and the arduino motor shield. Now the mechanics will make a first prototype of the machine in a few days. Also tested the temperature sensor under "real" conditions (~200°c) and worked perfectly.* 2014/04/01 - The prototype is done ! And it's not even an April fools joke !* 2014/06/11 - The motor used is not powerful enough in the current setup. Next step is to try adding a screw trough the rotor to get more torque and eventually to buy a new motor (DC, stepper ?). == See also ==* [[Ultimaker]]
== Participants ==
* [[User:noskill|noskill]]
* [[User:sasha|sasha]]
* Claudia Gessler- (contact@gessler-perspectives.ch) is starting a similar project with folks in Fribourg (met by [[User:oenvoyage|oenvoyage]] during a 3D Thursday)