Not extruding, with no reasonable excuse

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1

Hello all,

First post here, probably wont be the last lol.

Well I have a problem with my printer not extruding during printing. It started after 2 days after setting up octoprint to control my CR10S. I was able to print without issue for numerous prints, and then it just stopped extruding.

-The extruder drive gear turns and retracts but no filiment extrudes.

  • Filament extrudes when directed to manually through octoprint or the printers control even immediately after failing to extrude like the above.
  • Tested varying degrees of pressure on the filament idler with the extruder just kicking and still failing to act properly.
  • Performed cold pulls as well as completely clearing the nozzle. Eventually replaced the nozzle. no difference noted.
    -Updated to the most current TH3D firmware with no difference coming from it.
  • Printing works off and on with working to not working times currently being 3 days on 2 weeks off.
  • Installed stepper driver buffers on x, y, and extruder motors, with no difference noted to performance besides the higher frequency noises silencing notably.
  • I'm running the stock cr10s PLA at 210c-220c with the filament almost pouring out, and hatchbox pla at 200-210c. Temperature hasnt appeared to be a cause due to by running the same file through different temps made no difference.

Below is a same of a print of mine running Hatchbox PLA at 200c at 50mm/s. No filament was extruding 5 minutes into the actual print(post preheat), so the bottom section is after i cancelled. The settings ran on this print I have run on 5 prints with this PLA in the past 4 days, but now it doesnt work, and this is the cycle I have been experiencing for months.

PLEASE HAAAAAALPPP.

Send: N424 G1 X142.786 Y101.309 E24.27331*86
Recv: ok
Send: N425 G1 X145.171 Y101.828 E24.35449*93
Recv: ok
Send: N426 G1 X147.668 Y102.299 E24.439*81
Recv: ok
Send: N427 G1 X150.136 Y102.692 E24.52213*92
Recv: ok
Send: N428 G1 X152.599 Y103.014 E24.60474*95
Recv: ok
Send: N429 G1 X155.104 Y103.268 E24.68849*90
Recv: ok
Send: N430 G1 X158.495 Y103.501 E24.80154*89
Recv: ok
Send: N431 G1 X158.778 Y103.515 E24.81096*83
Recv: ok
Send: N432 G1 X161.425 Y103.611 E24.89906*94
Recv: ok
Send: N433 G1 X163.314 Y103.631 E24.96189*91
Recv: ok
Send: N434 G1 X218.317 Y103.637 E26.7913*103
Recv: ok
Send: N435 G1 X227.724 Y103.632 E27.10418*90
Recv: ok
Send: N436 G1 X230.434 Y103.592 E27.19432*85
Recv: ok
Send: N437 G1 X231.218 Y103.573 E27.2204*107
Recv: ok
Send: N438 G1 X231.528 Y103.57 E27.23072*99
Recv: ok
Send: N439 G1 X232.068 Y103.572 E27.24868*86
Recv: ok
Send: N440 G1 X232.625 Y103.568 E27.2672*109
Recv: ok
Send: N441 G1 X232.826 Y103.569 E27.27389*86
Recv: ok
Send: N442 G1 X233.194 Y103.573 E27.28613*86
Recv: ok
Send: N443 G1 X234.139 Y103.622 E27.3176*109
Recv: ok
Send: N444 G1 X234.723 Y103.677 E27.33711*83
Recv: ok
Send: N445 G1 X234.902 Y103.696 E27.3431*98
Recv: ok
Send: N446 G1 X235.256 Y103.735 E27.35494*88
Recv:  T:200.07 /200.00 B:60.24 /60.00 @:75 B@:0
Recv: ok
Send: N447 G1 X235.453 Y103.758 E27.36154*91
Recv: ok
Send: N448 G1 X235.907 Y103.816 E27.37676*91
Recv: ok
Send: N449 G1 X236.848 Y103.976 E27.40851*95
Recv: ok
Send: N450 G1 X238.098 Y104.319 E27.45162*84
Recv: ok
Send: N451 G1 X238.52 Y104.461 E27.46643*108
Recv: ok
Send: N452 G1 X238.867 Y104.584 E27.47868*93
Recv: ok
Send: N453 G1 X239.162 Y104.694 E27.48915*87
Recv: ok
Send: N454 G1 X240.042 Y105.065 E27.52091*90
Recv:  T:199.74 /200.00 B:60.09 /60.00 @:86 B@:0
Recv: echo:busy: processing
Recv: ok
Send: N455 G1 X240.609 Y105.352 E27.54205*92
Recv:  T:199.91 /200.00 B:59.88 /60.00 @:80 B@:127
Recv: ok
Send: N456 G1 X240.897 Y105.508 E27.55294*86
Recv: ok
Send: N457 G1 X241.231 Y105.697 E27.56571*90
Recv: ok
Send: N458 G1 X241.934 Y106.109 E27.59281*95
Recv: ok
Send: N459 G1 X242.737 Y106.625 E27.62455*94
Recv: ok
Send: N460 G1 X243.494 Y107.208 E27.65633*80
Recv: ok
Send: N461 G1 X244.199 Y107.851 E27.68807*92
Recv: ok
Send: N462 G1 X244.997 Y108.729 E27.72753*83
Recv: ok
Send: N463 G1 X245.176 Y108.948 E27.73694*86
Recv: ok
Send: N464 G1 X245.466 Y109.319 E27.7526*99
Recv: ok
Send: N465 G1 X246.011 Y110.045 E27.78279*82
Recv: ok
Send: N466 G1 X246.119 Y110.192 E27.78886*89
Recv: ok
Send: N467 G1 X246.519 Y110.743 E27.81151*83
--- too many lines to buffer, cut off ---
Recv: echo:busy: processing
Recv:  T:200.10 /200.00 B:60.10 /60.00 @:74 B@:0
Recv: echo:busy: processing
Recv:  T:200.03 /200.00 B:59.78 /60.00 @:76 B@:127
Recv: echo:busy: processing
Recv:  T:199.94 /200.00 B:59.91 /60.00 @:79 B@:127
Recv: echo:busy: processing
Recv:  T:199.97 /200.00 B:60.13 /60.00 @:79 B@:0
Recv: echo:busy: processing
Recv:  T:200.14 /200.00 B:60.17 /60.00 @:73 B@:0
Recv: echo:busy: processing
Recv: ok
Recv: ok
Recv: ok
Changing monitoring state from "Cancelling" to "Operational"
2

Hello @Jday!

Obviously not an OctoPrint issue.

You may check that the nozzle is not clogged.

If it is a firmware issue, you should ask TH3D

1 Like
3

is the gcode sample indicating normal extrusion speed?

4

For I don't have a CR10S I can't tell - sorry.

And there is no filament at all coming out of the nozzle? Not a single drop?

5

i honestly cannot see anything wrong with the gcode sample although what would normally tell me the extrusion speed/feedrate is not there

what i normally look for is G1 X(number) Y(number) (maybe "Z" but its rare) E(number) F(number)
F controls feedrate in units per minute

most creality devices have a limit on how fast it can go long before it should become an issue

also from the look of it your issue is just that you have a particle (or something similar) blocking the end of the nozzle

EDIT: bit later remembered that the issue could also be due to the bowden tube (stock one is white) being a tad loose causing the filament to spread into areas in to the hotend that it shouldnt be able to normally

to fix that id say to watch this video

6

My take on this is that the Fnnn determines the speed of the X/Y/Z axes as well as the E-related motor in question; they work in tandem.

Reference

The word "feedrate" is re-used from the CNC world, of course. It's an odd term, admittedly. A better pair of terms would be movementrate and filamentrate, perhaps if they were separate values. Presumably, they're combined so that extrusion amounts are not affected by acceleration-related changes near the end of lines.

G1 F1500                 ; Feedrate 1500mm/m
G1 X50 Y25.3 E22.4 F3000 ; Accelerate to 3000mm/m

However, in the above example, we set a feedrate of 1500 mm/m, then do the same move, but accelerating to 3000 mm/m. Everything stays synchronized, so extrusion accelerates right along with X and Y movement.
~ reprap.org

Your PLA temperatures seem way too high to me. I routinely use 190 +/- 5 for mine with a 0.4mm nozzle. The only exception would be carbon fiber—infused at 203.

Remove your PTFE tubing. Use a Sharpie and mark your filament at the point where it enters the cowel at the top of your hotend. Carefully measure and mark 50mm above this with one color of Sharpie. Measure and mark 5mm before/after that second mark with a different color.

Heat your hotend to 190 and wait until that is where it is supposed to be. Extrude 50mm exactly and note how close to the 2nd mark it was. Determine if you are under- or over-extruding.