[Noisebridge-discuss] 3d printer extruder temp
pdbogen at cernu.us
pdbogen at cernu.us
Thu Feb 19 18:26:07 UTC 2015
On Thu, Feb 19, 2015 at 10:12:13AM -0800, Jean Luc Picard wrote:
> NB is currently equipped currently ONLY with a Flashforge Creator. We had
> others, but IIRC the members/admins sold them for money for the better
> (current) printer w/ larger platform, LCD/D-pad kit, dual extruders, etc.
> You know, tricked out makerbot clone. The reprap mendel's still there for
> anyone who wants to hack the planet like it's 2008.
Rgr. Yeah, the Creator does have an uncanny resemblence to the MakerBot
Replicator on my desk, i.e., the bane of my existence.
It looks like Flashforge has gone so far as to duplicate the same type of
controller/firmware, which is unfortunate. It makes it more difficult to use
standard slicing software like my preference, slic3r.
I've had success using Slic3r with the Replicator; I don't know if the
correspondence between the two is close enough to use my solution whole cloth,
but it might provide a starting point. Slic3r will need to be told to insert
special start and end gcode (which is done via the printer configuration tab
in 'expert' mode):
start_gcode = (**** Start.gcode for Replicator 2 ****)\nM103 ;disable
RPM\nM73 P0 ;enable build progress\nG21 ;set units to mm\nG90 ;set
positioning to absolute\n(**** begin homing ****)\nG162 X Y F2500
;home XY axes maximum\nG161 Z F1100 ;home Z axis minimum\nG92 Z-5 ;set
Z to -5\nG1 Z0.0 ;move Z to "0"\nG161 Z F100 ;home Z axis
minimum\nM132 X Y Z A B ;Recall stored home offsets for XYZAB
axis\n(**** end homing ****)\nG1 X-141 Y-74 Z75 F3300.0 ;move to
waiting position\nG130 X20 Y20 Z20 A20 B20 ;Lower stepper Vrefs while
heating\nM6 T0 ;wait for toolhead, and HBP to reach temperature\nM70
P5 (We Be Making Things!)\nG130 X127 Y127 Z40 A127 B127 ;Set Stepper
motor Vref to defaults\nM108 R3.0 T0\nG0 X-141 Y-74 ;Position
Nozzle\nG0 Z1 ;Move above plate\nG1 Z0.3 ;Position Height\nM108 R5.0
;Set Extruder Speed\nM101 ;Start Extruder\nG4 P3000 ;Create Anchor\nG1
X-137 Y-70 Z0.1 F1000.0 ;Slow wipe\nG0 Z0.3 ;and lift\n(**** end of
end_gcode = (**** End.gcode ****)\nM103 ;Turn extruder off\nM104 S0
;Zero temperature\nM73 P100 ;End build progress\nG0 Z155 ;Send Z axis
to bottom of machine\nM18 \n;Disable stepper\nM104 S0 T0 ;Cool down
the Right Extruder\nG162 X Y F2500 ;Home XY endstops\nM18 ;Disable
stepper motors\nM70 P5 ( We Be Making Things!)\nM72 P1 ;Play Ta-Da
song\n(**** end of End.gcode ****)
Also, there's a "gcode_flavor" option that should be changed to "makerware."
Finally, there's a tool called gpx that can convert gcode files into the x3g
files that the replicator uses, a la:
gpx -g -f 1.75 -m r2 <input.gcode> <output.x3g>
Any or all of the details of these will probably need adjustment to work
properly with the creator, if that's a road you want to go down.
Slic3r should lend itself to much higher quality prints. Here's a direct
comparison of MakerWare vs Slic3r on the same printer:
Buuut, that might be a lot of work just for some 3D printed bunnies. Assuming
you're using makerware or whatever, you might just need to give up a bit on
speed and turn the quality setting up, which will do most of the things I've
mentioned in previous emails.
Patrick Bogen .
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