CTC replicator dual extruder for flexible filaments by ggherbaz

Last crawled date: 3 years, 1 month ago

For those of you that like me didn't like what was out there to handle flexible filaments, this extruder designed for the CTC replicator dual it's a solid sturdier block that support the filament all the way to the hot end. (will allow you to adjust easily the high of your throat pipe)
Printed with 40% infill, 4 top and bottom layers and 3 perimeters at 40 mm/s.
Note: for those of you that will wonder how did I print outside the built plate...... Simplify3d (not cheap, but worth it)
Sorry, I forgot to add the knob. just upload the new file with it.
UPDATE 08/20/14: after several hours of printing with ABS, one of the arms broke. I would recommend printing the arms with 100% infill instead of 40% as I indicated before.
UPDATE 02/18/15: After several months of using the design, I did some modifications. The new extruder works much better and cooling to the aluminum block was improved. (Print both main bodies at 70% infill, the bearing holders at 100% and fan cover at 20%)
Note: You will have to modify the start G-code to prevent hitting the extruder against the frame of the printer. Something like this:
; Replicator 1 dual start.gcode
M73 P0 ; enable build progress
G162 X Y F3000 ; home XY maximum
G161 Z F1200 ; home Z minimum
G92 Z-5 ; set Z to -5
G1 Z0 ; move Z to 0
G161 Z F100 ; home Z slowly
M132 X Y Z A B ; recall home offsets
M135 T0 ; load right extruder offsets
G1 X120 Y0 Z30 F9000 ; move to wait position off table
G130 X20 Y20 Z20 A20 B20 ; lower stepper Vrefs while heating
M126 S[fan_speed_pwm]
M140 S[bed0_temperature] T0
M134 T0 ; stabilize bed temperature
M104 S[extruder1_temperature] T1
M133 T1 ; stabilize extruder temperature
G130 X127 Y127 Z40 A127 B127 ; default stepper Vrefs
G92 A0 B0 ; zero extruders
M135 T1 ; load left extruder offsets
G1 Z0.4 ; position nozzle
G1 E25 F300 ; purge nozzle
G1 X120 Y0 Z0.15 F1200 ; slow wipe
G1 X120 Y0 Z0.5 F1200 ; lift
G92 A0 B0 ; zero extruders
M73 P1 ;@body (notify GPX body has started)
; end of start.gcode