minimum extrusion amounts
-
Printer is a Core XY based off the Hevo. Extruder is the E3D Hemera with a volcano heater block. I'm at work at the moment but when I get home I'll try M98 and M122 B. I was getting great prints up until about 2 weeks ago when I noticed really weird extrusion patterns on surfaces and missing sections of outer walls. I had thought it was maybe a signal reflection issue with the toolboard as during printing I was trying to fix the issue and would send M207 to change retraction settings and got
"Warning: Lost connection to Duet (Timeout while waiting for transfer ready pin)"
So I bought the tool distribution board hoping that would solve it. I haven't gotten the above error since then but am still having the extrusion issues.
-
Those prints look horrible ... this is not minor 'tweak' issue but a very fundamental error someplace.
-
@jens55 Is there a way to move it to a different section?
-
Don't worry about the section it is in. My point was that there are fundamental issues and chasing 'minimum extrusions' is the wrong thing (IMHO) to do at this point. Once you get a basically good print but have minor issues, then you go and tweak for those little issues.
I can't really suggest anything based on the pictures I am seeing - there is blobbing, there is under extrusion and other stuff.
About the only thing I can suggest is to start at square one tuning absolutely everything. Don't bother with anything past the first layer until you have the first layer worked out.
One aspect of the first layer is that the traces do not meet - either you are under extruding or your gap between build plate and nozzle is too large. -
@Phaedrux said in minimum extrusion amounts:
M98 P"config.g"
Only warning from M98 is
Warning: M307: Heater 0 appears to be over-powered. If left on at full power, its temperature is predicted to reach 356C
Which I would expect as the voltage/resistance of my heated bed is 240v and it's powered by 120v.
m122 b20
Diagnostics for board 20:
Board TOOL1LC firmware 3.2beta (2020-09-14b1)
Never used RAM 2.2Kb, max stack 376b
HEAT 323 CanAsync 362 CanRecv 355 TMC 52 MAIN 343 AIN 245
Last reset 00:42:49 ago, cause: power up
Last software reset data not available
Driver 0: position 442948, ok, SG min/max 0/14, read errors 0, write errors 0, ifcount 14, reads 32860, writes 0, timeouts 0, DMA errors 0, failedOp 0xff
Moves scheduled 890, completed 876, in progress 1, hiccups 0
Next step interrupt due in 246 ticks, enabled
VIN: 24.2V
MCU temperature: min 18.1C, current 48.0C, max 48.0C
Ticks since heat task active 138, ADC conversions started 2559729, completed 2559727, timed out 0
Last sensors broadcast 00000004 found 1 177 ticks ago
Free CAN buffers: 36, messages lost 0, duplicates 0, oos 0
NVM user row b1d088a9 fffff8bb 20003818 0
TSENS 0012b4 GAIN 015225 OFFS 00253b CAL 1f2bAlso tried printing with absolute extrusion and slicer retraction with prusaslicer, same issue and didn't extrude the same area.
-
@vishiano said in minimum extrusion amounts:
m122 b20
Diagnostics for board 20:Was this after printing?
Want to know if there are any hiccups after printing
Moves scheduled 890, completed 876, in progress 1, hiccups 0
-
@Phaedrux For the above I sent m122 when it was on layer 3.
I just sent it again when it was around 95% done with the print, got an error message I haven't seen before, could hear the print slow down when i sent it.
10/20/2020, 8:43:56 PM m122 b20
Diagnostics for board 20:
Board TOOL1LC firmware 3.2beta (2020-09-14b1)
Never used RAM 2.2Kb, max stack 392b
HEAT 321 CanAsync 358 CanRecv 352 TMC 52 MAIN 343 AIN 245
Last reset 00:45:12 ago, cause: power up
Last software reset data not available
Driver 0: position 2066070, standstill, SG min/max 0/16, read errors 0, write errors 0, ifcount 12, reads 11200, writes 0, timeouts 0, DMA errors 0, failedOp 0xff
Moves scheduled 40237, completed 40208, in progress 0, hiccups 0
No step interrupt scheduled
VIN: 24.2V
MCU temperature: min 37.1C, current 49.0C, max 51.0C
Ticks since heat task active 229, ADC conversions started 2701473, completed 2701473, timed out 0
Last sensors broadcast 00000004 found 1 19 ticks ago
Free CAN buffers: 3, messages lost 168, duplicates 0, oos 8689
NVM user row b1d088a9 fffff8bb 20003818 0
TSENS 001327 GAIN 015225 OFFS 00253b CAL 1f2b
10/20/2020, 8:43:40 PM m122 b20
Error: M122: Response timeout: CAN addr 20, req type 6024, RID=1528 -
and after completing the print
m122 b20
Diagnostics for board 20:
Board TOOL1LC firmware 3.2beta (2020-09-14b1)
Never used RAM 2.2Kb, max stack 392b
HEAT 321 CanAsync 358 CanRecv 352 TMC 52 MAIN 343 AIN 245
Last reset 00:49:22 ago, cause: power up
Last software reset data not available
Driver 0: position 2123290, standstill, SG min/max 0/16, read errors 0, write errors 0, ifcount 12, reads 48164, writes 0, timeouts 0, DMA errors 0, failedOp 0xff
Moves scheduled 45124, completed 45124, in progress 0, hiccups 0
No step interrupt scheduled
VIN: 24.5V
MCU temperature: min 37.1C, current 49.3C, max 51.0C
Ticks since heat task active 40, ADC conversions started 2951037, completed 2951036, timed out 0
Last sensors broadcast 00000004 found 1 43 ticks ago
Free CAN buffers: 36, messages lost 0, duplicates 0, oos 8745
NVM user row b1d088a9 fffff8bb 20003818 0
TSENS 001345 GAIN 015225 OFFS 00253b CAL 1f2b -
Thanks. Not sure about that time out error, but no hiccups shown, so that's good I guess.
Are you sure of your nozzle size?
What are your print settings in the slicer? Layer height, extrusion width, print speed, etc.
-
I think you need to increase your instantaneous speed setting for your extruder quite a bit...for my corexy printers with bondtech extruders I have them set at 2000 which for you using mm/sec would be 33. With it set so low it can affect your print especially if you try pressure advance. I would also up your acceleration on your extruder as well. I'm running mine happily at 2000.
Your max extruder speed is also rather low and I could see that causing issues with retraction and un-retraction since you are limiting it to 20mm/s.
Also, what's with the 1569 steps/mm for your Z? Usually they would be either 400 or 1600 for the common leadscrews.
-
That's a good call. I noticed that too actually but forgot to mention it.
Try M205 E50 and M201 E3000 and M203 E3000
-
@Phaedrux said in minimum extrusion amounts:
Thanks. Not sure about that time out error, but no hiccups shown, so that's good I guess.
Are you sure of your nozzle size?
What are your print settings in the slicer? Layer height, extrusion width, print speed, etc.
I'm certain of the nozzle, it's a couple month old microswiss 0.6 nickel plated nozzle, and I've only printed PLA with it. I've also tried the standard e3d 0.4 brass nozzle and had the same issue with other prints.
From the beginning of the print sliced with prusaslicer
; generated by PrusaSlicer 2.2.0+win64 on 2020-10-10 at 22:47:25 UTC
; Prusaslicer does not like odd number lines!
; external perimeters extrusion width = 0.68mm
; perimeters extrusion width = 0.68mm
; infill extrusion width = 0.68mm
; solid infill extrusion width = 0.68mm
; top infill extrusion width = 0.60mm
; first layer extrusion width = 0.80mmM107
M190 S55 ; set bed temperature and wait for it to be reached
M104 S225 ; set temperature
M98 P"0:/macros/startprint.g"
M109 S225 ; set temperature and wait for it to be reached
G21 ; set units to millimeters
G90 ; use absolute coordinates
M83 ; use relative distances for extrusion
; Filament gcode
M702
M701 S"PLA_4043D"
M703
G10 ; retract@Phaedrux said in minimum extrusion amounts:
That's a good call. I noticed that too actually but forgot to mention it.
Try M205 E50 and M201 E3000 and M203 E3000
I'll try these but fair warning I had them around these levels previously with the same issue.
@JamesM said in minimum extrusion amounts:
Also, what's with the 1569 steps/mm for your Z? Usually they would be either 400 or 1600 for the common leadscrews.
Was 1600 I probably changed it trying to fix this issue, I'll switch it back.
-
Try M205 E50 and M201 E3000 and M203 E3000
I'll try these but fair warning I had them around these levels previously with the same issue.
Ya just tried again, same issue. Could this be a stepper driver issue?
-
@vishiano said in minimum extrusion amounts:
M98 P"0:/macros/startprint.g"
What do you have in this macro?
M701 S"PLA_4043D"
What do you have in that filament load macro?
-
startprint.g
;M98 P"homeall.g" ;home axes
;G28 XYZ ;home xy
G32 ;adjust Z axis lead screws
;G29 S1 ;load mesh height map
G21 ; set units to millimeters
G90 ;relative positioning
G1 X20 Y25 Z0.2 F1500 ;move to the side of the printer
;M109 S200
G1 H0 X200 Y25 Z0.2 E30 F600 ; move in a straight line extruding filament
G10 ;retract
G92 E0 ; Reset extruder distancePLA_4043D
M291 P"Please wait while the nozzle is being heated up" R"Loading PLA_4043D" T5 ; Display message
G10 S215 ; Set current tool temperature to 210C
M116 ; Wait for the temperatures to be reached
M190 S55 ;Set the bed temperature to 55c
M291 P"Feeding filament..." R"Loading PLA_4043D" T5 ; Display new message
G1 E5 F600 ; Feed 10mm of filament at 600mm/min
G4 P1000 ; Wait one second
G1 E-1 F600 ; Retract 5mm of filament at 1800mm/min
G92 E0 ; Reset extruder distance
M400 ; Wait for moves to complete
M292 ; Hide the message -
@vishiano said in minimum extrusion amounts:
G32 ;adjust Z axis lead screws
What do you have in bed.g?
-
@Phaedrux said in minimum extrusion amounts:
@vishiano said in minimum extrusion amounts:
G32 ;adjust Z axis lead screws
What do you have in bed.g?
; bed.g
; called to perform automatic bed compensation via G32
;
; generated by RepRapFirmware Configuration Tool v3.1.3 on Mon Jun 29 2020 01:54:12 GMT-0400 (Eastern Daylight Time)
M561 ; clear any bed transform
;G29 ; probe the bed and enable compensation
;G28 ; home
M98 P"homeall.g"
G30 P0 X460 Y250 Z-99999 ; probe near a leadscrew, half way along Y axis
G30 P1 X20 Y250 Z-99999 S2 ; probe near a leadscrew and calibrate 2 motors -
@vishiano said in minimum extrusion amounts:
M98 P"homeall.g"
You know what I'm gonna ask for next, right?
-
; homeall.g
; called to home all axes
;
; generated by RepRapFirmware Configuration Tool v3.1.3 on Mon Jun 29 2020 01:54:12 GMT-0400 (Eastern Daylight Time)M400
M98 P"homex.g"
M400
M98 P"homey.g"
M400
M98 P"homez.g"
M400; homex.g
; called to home the X axis
;
; generated by RepRapFirmware Configuration Tool v3.1.3 on Mon Jun 29 2020 01:54:12 GMT-0400 (Eastern Daylight Time)
;M400 ; wait for any current moves to finish
;M913 X30 Y30 ; drop motor current to 70%
;M400 G91 ; relative positioningG91 ; relative positioning
G1 H2 Z10 F2000 ; lower Z relative to current position
G1 H1 X500 F5000 ; move quickly to X axis endstop and stop there (first pass)
G1 X-5 F200 ; go back a few mm
G1 H1 X500 F500 ; move slowly to X axis endstop once more (second pass)
G1 H2 Z-10 F2000 ; lift Z again
G90 ; absolute positioning
M400 ; wait for moves to finish; homey.g
; called to home the Y axis
;
; generated by RepRapFirmware Configuration Tool v3.1.3 on Mon Jun 29 2020 01:54:12 GMT-0400 (Eastern Daylight Time)
G91 ; relative positioning
G1 H2 Z5 F2000 ; lift Z relative to current position
G1 H1 Y-505 F1800 ; move quickly to Y axis endstop and stop there (first pass)
G1 Y5 F6000 ; go back a few mm
G1 H1 Y-505 F360 ; move slowly to Y axis endstop once more (second pass)
G1 H2 Z-5 F2000 ; lower Z again
G90 ; absolute positioning; homez.g
; called to home the Z axis
;
; generated by RepRapFirmware Configuration Tool v3.1.3 on Mon Jun 29 2020 01:54:12 GMT-0400 (Eastern Daylight Time)
G91
G1 H2 Z10 F1000 ;move the bed down a bit
G90 ; relative positioning
G1 X250 Y250 F2000 ;move probe to centre of bed
G30 ;probe bedWhen I have extra time I'll have to write a script that dumps all this into a file for you
-
@vishiano said in minimum extrusion amounts:
When I have extra time I'll have to write a script that dumps all this into a file for you
In the system tab of DWC you can click the check box to highlight all files and then right click and download as zip. Then you can extract the zip file and drag and drop those .g files onto the forum post window to upload them.
Now that we've chased down all the gcode being executed when the print starts we're at least sure something weird isn't getting changed without realizing it.
