3D printed Filament Extruder based on LyMan Design

Author: ceb, published on 2013-09-17

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Summary

Filament extruder Using an extended Lyman design…
In the tradition of RepRap 3D printer project I have attempted to use printed parts for this extruder whenever possible. Also, I’ve attempted to make this filament extruder as portable as possible. Main feature improvements are –
1) Replacement of all wood parts.
2) Cooling fan and filament guide have been incorporated into single unit that is adjustable and folds in unit to reduce size.
3) Hopper has been improved to strengthen.
4) Overall unit has been designed to use 5/16 threaded rods for spacing and strength and to remove need for wood shop.
5) Engine mount is now printed plastic and can be adjusted for multiple engine types as long as they are 12V and spin around 2 RPM.
5) Power and electronics have been placed in Printed box that is incorporated into design. The power supply is integrated into box with model designed to support multiple unit’s with limited need to adjust cradle.

Instructions

Overview of main parts (Sourced from LYMAN Filament Extruder II)
Full ductumentation on extruder is located on
ThingiVerse http://www.thingiverse.com/thing:34653

1)Engine: NatureMill – Electric 12V engine 2 RPM
2) Milled Parts –
140 mm threaded ½ inch pipe (Cut required)

        ½ inch cap with hole 3mm or 1.75mm drilled  
        AUGER DRILL BIT #39 5/8 DIA   

(Cut off end)
Metal parts
70mm threaded ½ inch pipe
Band Heater 1-1/2
male end to end coupler ½ to 1/2 outer diameter 1&1/2
male end to end 1-1/2 length ½ pipe.
1K thermistor type K
3 ½ inch pipe mounts
1 ball bearing (Thrust Bearing)
2 rods smooth 435 mm 5/16
2 rods threaded 435mm 5/16
AUGER DRILL BIT #39 5/8 DIA
(Cut off end)
6 IM8uu bearings
Electrical Parts
1 DEI 1” Exhaust Wrap
2 Light on off 20A/125V AC switches
1 10AMP 12Volt On/off rocker switch
voltage regulator 2A
old laptop power supply 12V 5 AMPS
SSR-25DA Solid State Relay (25AMP)
PID TEMP CONTROLLER
TA4

Credit Hopper is extended from http://www.thingiverse.com/thing:132386
Fan Grill extended from http://www.thingiverse.com/thing:11906

Filament extruder Using an extended Lyman design

In the tradition of RepRap 3D printer project I have attempted to use printed parts for this extruder whenever possible. Also, I’ve attempted to make this filament extruder as portable as possible. Main feature improvements are –
1) Replacement of all wood parts.
2) Cooling fan and filament guide have been incorporated into single unit that is adjustable and folds in unit to reduce size.
3) Hopper has been improved to strengthen.
4) Overall unit has been designed to use 5/16 threaded rods for spacing and strength and to remove need for wood shop.
5) Engine mount is now printed plastic and can be adjusted for multiple engine types as long as they are 12V and spin around 2 RPM.
5) Power and electronics have been placed in Printed box that is incorporated into design. The power supply is integrated into box with model designed to support multiple unit’s with limited need to adjust cradle.

If intrested in the scad code please let me know and I will include it

License: Creative Commons – Attribution – Share Alike

Tags: 3D, 3D_printer, filament, filament_extruder, portable, recycle, re_extruder