Lyman Filament Extruder
- 1 Basics
- 2 2018 - Simplified Version
- 3 2018 - 3 More Builds
- 4 2018
- 5 2017
- 6 Source
- 7 FreeCAD File
- 8 Working Document
- 9 BOM
- 10 Master Index
- 11 Part Library
- 12 Communications
- 13 Technical
- 14 Internal Links
- 15 External Links
- A Device for making Plastic Pellets or Plastic Flakes into Plastic Filament
- Can then be used in an FDM 3D Printer
- Also allows recycling plastic into filament with a proper shredder system/workflow
- Total Cost ~400 USD (skimmed bom?) ~16x 1kg 25 USD Filament Spools until it breaks even
- Filament Material Properties vs OTS Filament (needs research and/or dedicated page)
- Needs a bit more organized for new people looking for info on lyman, perhaps a geneology page?
2018 - Simplified Version
2018 - 3 More Builds
See other FB posts on build prep - 
- Thingiverse v6 download - includes build manual - 
- v5 download with manual - was RAMPS based with 150 kg-cm stepper. Ma
Your work appears to be very interesting.
I don't visualize my being involved in your workshop as I am now 87 years old living in Enumclaw, Washington.
My latest Filament Extruder, Version 6 is the only extruder I am now supporting. It is my favorite extruder and all my filament is now produced with the three I have made. It extrudes 3mm (2.65mm) filament at about 1/2 lb/hour with the gear motor running at 25 rpm. The motor is rated for 33 rpm but under load it only goes about 25. . A faster gear motor with about 100 kg-cm of torque may give 1 lb/hr. I get a filament that varies not more than .05mm with the extruder wall mounted.
This extruder is posted on Thingiverse and is open source CC share alike. The posting includes a BOM. Also there is a video on YouTube.
- Uses 173 kg-cm torque motor (150 lb in) , but a 10 lb-in stepper (2 nema 17, 80 oz-in motors) reduced 10x may be sufficient (so still can use small, cheap steppers, no more than $20 in stepper motor costs. Advantage is that we are introducing no new parts to the GVCS, as steppers are already used.
- Lyman Filament Winder
- Lyman Filament Extruder Part Library
- Plastic Pellets
- London International Academy Filament Extruder Build
- Filament Extruder
- Bioplastic Extruder
- A Video Demo on The Original Device
- An article by Shapeways on this
- An article by wired on this
- Thingiverse - v6 - http://www.thingiverse.com/thing:1199870. Download BOM + files (backup in case if Thingiverse goes south) - File:Lymanv6.zip
- Comments on Thingiverse provide some useful details.
- Spool winder v3, Jan 2016 - . Download - File:Lymanspoolerv3.zip
- A Semi-Redundant Development of ANOTHER Filament Maker by Precious Plastic