Posts made by Leav

• IR Thermometer was pointed at the black FR4/G10 sheet (not the glass)
• At room temp, the readings are:

 Bed: 26.0°c
Hotend: 24.4°c
Chamber: 26.3°c
Multimeter probe on bed: 28°c

I suspected that my bed thermistor position was not giving a good reading, it was not exactly in the most sensible location.

Here you can see the temperature probe location (under the glass) and the multimeter's probe (I found it) placed on the bed in the center.

I later moved the bed probe (the one the printer uses) to the center of the bed and measured again (in the photo you see it on top of the glass, that's just to show where I placed it, in reality it is under the glass):

The results are quite dramatic:

• In both cases bed temp target is 100°c, and in both cases that temp is maintained on the thermistor very well (blue and yellow lines, blue is barely visible).
• The red line shows that when the probe was not in the correct location, the actual temperature in the center of the bed was much higher and reached ~130°c
• The green line shows that when the probe is placed in the center of the bed, the top of the bed reaches ~77°c
• This is both a large change between the two temperature measurements (~60°c) and in both cases a large error between the value that the controller sees and the actual temperature on top of the bed. I'll have to see how I can address this, possibly a different temperature probe location.
• To be clear, this means that when I thought my print bed temp was 110°c, it was closer to ~140°c, which could explain a few things.

@norder said in Mushrooming print - What could cause this?:

It would be great if you could send one last photo.
Maybe even a cog with the problem and a current cog next to it.
I would be interested in the end result, because the GIF doesn't show how well the print has become.
The top should also be visible.
Thanks !

Thanks for all the tips, I'll definitely give them a try to see if I can improve my accuracy even more (or see how far off I am...)

First the side view (best I could do without a telecentric lens):

This shows the bottom cavity where the plastic collapsed into:

The next one is a GIF:

@o_lampe said in Mushrooming print - What could cause this?:

@leav
It still puzzles me, why it was able to collaps at 100% infill? But I'm glad you found a solution.

The part designhas a central cavity, that gave the plastic a place to collapse into, that's my explanation for "where did the plastic go?".

@hackinistrator said in Mushrooming print - What could cause this?:

that's strange .
i have both esun ABS+ and polymaker ASA.
i use much higher bed temp , around 120-130c and never had this effect .
maybe your bed temp readings are way off .

Definitely could be. I double checked with an IR thermometer and got ~5°c off the printer's reading (which is good for an unknown emissivity, I'd say...). Can't find my multimeter's thermocouple at the moment but I will double check it.
However I think there is a possibility that the readings are accurate and the cause for the different behavior might be:

• High temperature inside the chamber (4 of the 6 walls are double aluminum panels with an air gap between them for better insulation, and the remaining doors are thick glass panels)
• Reflective aluminum walls bouncing the IR radiation from the oversized bed back to part to be absorbed.

Happy to update (click to see the GIF):

Printing settings:

• Polymaker ASA @240°c
• Bed at 75°c
• Chamber still heated up to ~50°c (It's passively heated by the giant bed, not much I can do to reduce it)
• Fan at 15% for the entire print, except the first 4 layers

Results:

• Perfectly straight pulley teeth
• Slight deformation on the bottom pulley wall (touching the bed), I think I need to enable cooling there as well, just a bit.

I would like to thank everyone here for your help, it's been amazingly helpful to have so many experienced people chime in and help me improve my printer and my my understanding.

Though the main culprit turned out to be simply a overly hot print bed, I also improved the way I calibrate my printer and removed a different error I have had for years.

Special shoutout to @Norder and @alankilian! Thanks so much!

@norder said in Mushrooming print - What could cause this?:

I would like to see a video of the print.

A picture is worth a thousand words, but a GIF can hold a thousand pictures.

Since this happened with two different brands, I think there must be something wrong with my temperature settings?

• ABS from eSun and ASA from Polymaker
• Happened both @ 230°c and 250°c
• Bed @ 110°c
• Chamber temp reaches ~50°c and stabilizes there

Those seem pretty standard settings from what I've seen around. Maybe my temperature calibrations are off?

@norder said in Mushrooming print - What could cause this?:

@leav
It looks like your component cooler is a hot air gun. Try it with a very easy to print PLA.

If that then looks good, you know that you have to work on the settings of the ASA, but the printer is OK.

You don't know the half of it. Here's a macro shot of the pulley teeth printed with the part "cooler" on, the shrinking is even worse.

Now printing 3 perimeters @ 42% infill in ASA, but I'll bust out my first ever roll of PLA after that.

@alankilian said in Mushrooming print - What could cause this?:

@leav said in Mushrooming print - What could cause this?:

Pulleys do not seem impressed with all the improvements.

Have you tried reslicing with only 3 perimeter walls and 50% infill like I did?

I got them to print prefectly when I made that change even though they printed distorted with completely-filled with perimeter walls like yours.

Doing that now, will update (I went for 18% infill).

@alankilian said in Mushrooming print - What could cause this?:

Also, can you please post the GCODE for just one pulley centered on the bed?

Here you go - This includes a single thick-walled pulley plus a 3-perimeter 18% infill version which I am now printing.

Pulleys do not seem impressed with all the improvements.
Now trying with part cooling fan on at 50% (even though this is ASA).

Happy to report that:

• Changing to 3-parameter calibration removed almost all of the waviness
• Reducing extrusion temp from 250°c to 230°c eliminated the warping near the edge in test parts
• I did indeed find that the socket was coming loose at the edge of the print area as @o_lampe suspected (though I estimate that it was not an issue in the original pulley parts. [Video 1] and [[Video 2](Video 2)], "fixed" by removing excess grease (may redesign the sockets one day)

Original thin wall cylinder (spiral vase)

Same part printed after the fixes 1 & 2 above (the printing gap is due to the socket pulling out, fixed mid print)

Now printing the pulleys again...

• 3 drive motors tested and all good
• 3 axis travel tested, all good
• Z probe repeatability: 0.065mm and 0.061mm (two different tests, 10 probes each in center)
• Flatness of travel after mesh - to be tested
• Calibrate flow from scratch - to be done
• Temp calibration TBD

I had the same train of thought as @pjl , and found this sentence in the guides:

Bed should be at right angles to the towers in both X and Y directions

Actually, this isn't essential, because RepRapFirmware can compensate for bed tilt. Unfortunately, auto calibration can't easily distinguish between bed tilt and differences in tower separation. One approach to getting the bed level is to mount it on 3 equal-length spacers attached to the lower horizontal frame. If you are using metal corners, the horizontal frame should be at right angles to the towers. If you do need to make any adjustment, you can stack washers or shims on top of one or two of the spacers.

This is actually NOT the case in my printer: the bed flatness must be calibrated by hand every time you need to access the electronics (see pic1 below) and I always just assumed the mesh probing will take care of it.

Running M665 I get:

M665
Diagonals 511.070:511.070:511.070, delta radius 172.890, homed height 341.889, bed radius 160.0, X 0.399°, Y 1.141°, Z 0.000°

An angle deviation of 1.141° means a position deviation of ~5mm, which is just not possible in my printer (the tower tops and bottoms are held in place by two laser cut sheets).

This confirmed my suspicion that I was wielding the G30 command without understanding its power and limitations.

Steps taken now:

• Bed perpendicular-ed to towers with a carpenter's square (see below, it's what I had...)
• bed.g changed to 4 factor calibration (was 6 factor)

Printing test file now, will update!

@alankilian said in Mushrooming print - What could cause this?:

@leav

Is there any way you could post your STL files (And GCODE for comparison?)

I'd love to try printing this on my Delta to see if there's anything in the model or sliced code that's causing this.

Shoot, I meant to do this with the previous post.
Here is a link to a zip with the two STL files and the SuperSlicer 3mf project (not sure if it's compatible with prusa slicer or other versions). Please let me know what you find.

@engikeneer said in Mushrooming print - What could cause this?:

@leav could it simply be shrinkage/warping?

It looks like the faster layers without solid infil (I.e. the ones that are laid down faster) are just contracting, but the slower layers are maintaining size better.

I'd try a different reel/brand of filament, or a different material

Could very well be. The green material was eSun ABS+, and I printed these black items with Polymaker ASA (same exact gcode).

The deformation is noticeably smaller, leading me to believe plastic shrinkage may be the main mechanism here.
My printing temps:

• Extruder 250°c
• Bed 110°c
• Chamber (passively heated by 2000w bed heater) ~40-50°c (rises during the print)

@norder said in Mushrooming print - What could cause this?:

At first glance it looks like over-extrusion or wrong Z-axis stepps.
The retract doesn't seem to be there either, if you look at the blobs on the skirt and where you move from the skirt to the first layer of the component, the filament runs through without interruption.

Thanks for calling attention to that. I have a super long bowden tube (>1000mm), and retraction is currently set to only 8mm. I think it's very likely it needs to be much larger to account for the extra length of the filament snaking around in the capricorn tube.

Regarding your calibration suggestions, I am jotting down a list here:

• Check drive item tightness (including pulley set screws in all 4 steppers)
• measure axis travel (all 4 steppers)
• Bed level sensor repeatability test
• Check flatness of travel to bed after mesh probing using an indicator that clips on the effector
• Calibrate flow from scratch (filament diameter + flow calibration print)
• Optimal printing temperature test (temperature tower?)

Will report back the results

@o_lampe said in Mushrooming print - What could cause this?:

How about the rod-distance? The effector looks like the magnets are arranged in a regular pattern (more or less)
It seems easy to match the wrong pair of magnets, which would lead to non-parallel rods.

You are correct that it is easy to get a mismatch pair, but in this case it is correct - Thanks!

@norder said in Mushrooming print - What could cause this?:

Did you use the printer to print the red fan-duct that you can see in the photo here ?

Yes

@norder said in Mushrooming print - What could cause this?:

This effect can also be seen there, that the outer wall collapses inwards.
But it seems to be worse on the left side than on the right !?

Good eye, I didn't catch that!

@norder said in Mushrooming print - What could cause this?:

Print a 100mm high cylinder (or even higher) in vase mode and show us the result.
It is best to do this in different places on the print bed one after the other.
For example, as close as possible to each of the three Z-axes and once in the middle.
Just to make it clear where this effect occurs.

In progress now, will update soon, including results of the above tests.

I would like to say thanks to everyone pitching in to try and figure it out, much appreciated!

I hear all your thoughts regarding the magnetic cups, I'll give you my own experience with them:

• They feel retained very well with zero backlash under low loads
• If the nozzle collides with the print in any meaningful way, they disconnect totally and very obviously
• In rare cases I've seen them disconnect and reconnect, but this has always been a prelude to a permanent disconnect as described above
• Of course it is possible that what we're seeing are micro disconnects of some sort, but I have a hard time believing the joints would hold on so reliably under disconnect conditions

I decided I don't understand the issue enough so printed some stuff and I have some more data to chew on...

First I calibrated the extrusion using SuperSlicer's generated test:

I settled on 0.92 extrusion multiplier because the -20% circle looked under extruded, and set out to print the whole set to gather more data:

Honestly, I'm at a loss. I can't imagine any sort of issue that could cause this.

The effect is roughly uniform in Z, and has a radial symmetry in the pulleys, so based on my understanding of Deltas, I feel like this should rule out any geometric issues within the system.

There is a transition in the section in the pulley in this area, see the lower part:

And the upper part:

I'll have to sleep on this. Happy to get any thoughts you have and test any theories put forth.

As this looks like it could be contraction, I guess maybe the next step is to test PLA? (never printed PLA before)

@phaedrux said in Mushrooming print - What could cause this?:

General over extrusion?

Or perhaps the z axis isn't moving the expected amount?

Or perhaps your bed is expanding over the course of the print?

I was going to say "no way" to over extrusion, but I ran some more tests and noticed the effect is more noticeable when there is "gap filling" involved.
The images below show slicer vs. reality (new slicing, not the same parameters as the original post):

The effect did repeat itself in the teeth later in the print (red) along with some curling/overextrusion effect:

100% infill is challenging, especially if your extrusion isn't properly calibrated.. I'll calibrate and post back for posterity.

@cosmowave said in Mushrooming print - What could cause this?:

@leav
Are you sure that your delta is built correctly?
bed in right angle to the towers, rod length, radius, ...

I think, some wrong parameters/dimensions can cause this "mushrooming".

EDIT: can it be that the effector is tilting?

Thanks for the thoughts. The geometry is defined by a laser cut plate, so should be pretty good - I double checked and don't see any major errors. wouldn't hurt to measure the rod length again to double check - I'll do that.

One thing about my printer: I know for a fact that the plane of the printing bed is not perpendicular to the vertical rails. I wonder if the delta calibration algorithm assumes it is, or if it can compensate for that as well....

As I have started printing larger object, I have noticed a printing defect I have not seen anyone discuss before: The print walls seem to deflect first inwards in the first layers and then outwards in later layers.

See the images below:
The teeth on the pulleys are supposed to be vertical.
The effect is more pronounced in the center of the bed, between the pulleys.
Please also note the low quality of the print in the teeth area, while the smaller washers have much better perimeter quality.

Details:

• ASA filament @ 250°c (Same effect with ABS, not yet printed in PLA on this printer)
• FR4/G10 Heated bed: first layer @100°c, then 85°c for the rest of the print
• Delta printer with nozzle probing (strain gauge on the effector holding the hot end)
• 6-factor calibration is performed 3 times every time I remove the bed
• Mesh leveling performed before every print
• The above images are from a 10-perimeter, 100% infill print, but the same effect is seen in 2-perimeter, 10% infill prints.

Do you have any thoughts on what could cause this?

some more images below:

Config.g

; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Sun Jul 19 2020 22:30:32

; General preferences
G90                                            ; send absolute coordinates...
M83                                            ; ...but relative extruder moves
M550 P"Goliath"                                ; set printer name
M665 R172.66 L511.07 B140 H330.5                 ; Set delta radius, diagonal rod length, printable radius and homed height (should be R150, but fan is too large!)
M666 X0 Y0 Z0                                  ; put your endstop adjustments here, or let auto calibration find them

; Network
M552 S1                                        ; enable network
M586 P0 S1                                     ; enable HTTP
M586 P1 S0                                     ; disable FTP
M586 P2 S0                                     ; disable Telnet

; Drives
M569 P0 S0                                     ; physical drive 0 goes backwards
M569 P1 S1                                     ; physical drive 1 goes forwards
M569 P2 S0                                     ; physical drive 2 goes backwards
M569 P3 S1                                     ; physical drive 3 goes forwards
M584 X0 Y1 Z2 E3                               ; set drive mapping
M350 X16 Y16 Z16 E16 I1                        ; configure microstepping with interpolation
M92 X100.00 Y100.00 Z100.00 E137.82            ; set steps per mm (E is 430 for bondtech, 137.82 for creality)
M566 X600.00 Y600.00 Z600.00 E1200.00          ; set maximum instantaneous speed changes (mm/min) (was [x,y,z]=1200)
M203 X9000.00 Y9000.00 Z9000.00 E6000.00		; set maximum speeds (mm/min) (was [x,y,z]=18000) Extruder changer to 6000 from 1200
M201 X500.00 Y500.00 Z500.00 E1000.00       	; set accelerations (mm/s^2) (was [x,y,z]=1000)
M906 X1000 Y1000 Z1000 E1500 I30                ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                        ; Set idle timeout

; Axis Limits
M208 Z0 S1                                     ; set minimum Z

; Endstops
M574 X2 S1 P"!xstop"                           ; configure active-high endstop for high end on X via pin !xstop
M574 Y2 S1 P"!ystop"                           ; configure active-high endstop for high end on Y via pin !ystop
M574 Z2 S1 P"!zstop"                           ; configure active-high endstop for high end on Z via pin !zstop

; Z-Probe
; Original command before 2021-10-23 was "M558 P5 C"!zprobe.in" H3 F500 T6000 ;A3 S0.01"
; ! because Z-strain-probe is inverted (Documentation says NC switches are best practice, I took the advice even though this isn't a switch per se).
; Reduced F500 to F50 for testing
; Changed G31 from "G31 P500 X30.31 Y17.5 Z2.2" to "G31 P500 X0.0 Y0.0 Z0.0"
; P5 (filtered digital) or P8 (unfiltered digital) 
; ^ enables pull up resistor on input

M558 P8 C"!zprobe.in" H5 F250 T6000 R1.5 ;A5 S0.01   ; set Z probe type to switch and the dive height + speeds (was 120mm/sec)
G31 P500 X0.0 Y0.0 Z-0.35                    	; set Z probe trigger value, offset and trigger height [Nozzle lifts when triggered, and pushes bed down slightly. was 0.3mm, updated to 0.35 after the probing was chnaged to "probe when extruder is cold"]
M557 R140 S35									;Set probing radius to 140mm with a probe spacing of 35mm

; Heaters
M308 S0 P"bedtemp" Y"thermistor" A"Bed" T100000 B4725 C7.060000e-8 ; configure sensor 0 as thermistor on pin bedtemp
M950 H0 C"bedheat" T0                          ; create bed heater output on bedheat and map it to sensor 0
M307 H0 B1 S1.00                               ; enable bang-bang mode for the bed heater and set PWM limit
M140 H0                                        ; map heated bed to heater 0
M143 H0 S135                                   ; set temperature limit for heater 0 to 135C

M308 S1 P"e0temp" Y"thermistor" A"Extruder" T100000 B4725 C7.060000e-8  ; configure sensor 1 as thermistor on pin e0temp
M950 H1 C"e0heat" T1                           ; create nozzle heater output on e0heat and map it to sensor 1
M307 H1 B0 S1.00                               ; disable bang-bang mode for heater  and set PWM limit
M143 H1 S300                                   ; set temperature limit for heater 1 to 300C

M308 S2 P"e1temp" Y"thermistor" A"Chamber" T100000 B4725 C7.060000e-8  ; configure sensor 2 as thermistor on pin e1temp (chamber thermistor)


; Fans
M950 F0 C"fan0" Q100                           ; create fan 0 on pin fan0 and set its frequency
M106 P0 X1 H1 T45                            ; set fan Thermostatic control is turned on based on heater1 (H1) temperature probe
M950 F1 C"fan1" Q100

; Tools
M563 P0 S"Extruder0" D0 H1 F1                  ; define tool 0: uses Drive0, Heater1 and Fan1 (Fan0 is mapped to thermostatic control)
G10 P0 X0 Y0 Z0                                ; set tool 0 axis offsets
G10 P0 R0 S0                                   ; set initial tool 0 active and standby temperatures to 0C

; Lighting
M950 P0 C"e1heat"							   ; create output port 0 attached to heater 1\
M42 P0 S0.1									; Turn on Case light 10%

;Tool Selection
T0

; Load Custom settings
M501

;Setup power failure procedure
M911 S21.0 R23.0 P"G91 M83 G1 Z3 E-5 F1000"
;Set relative movement mode (G91)
;Set relative extrusion mode (M83)
;Simultaneously lift the head and retract filament (G1 Z3 E-5 F1000)

Bed.g (in case it matters):

; bed.g file for RepRapFirmware, generated by Escher3D calculator
; 16 points, 6 factors, probing radius: 140, probe offset (0, 0)
; This is for the Delta calibration, not for the mesh bed leveling - don't delete this!
; https://www.escher3d.com/pages/wizards/wizardbed.php


G28
G30 P0 X0.00 Y140.00 Z-99999 H0
G30 P1 X89.99 Y107.25 Z-99999 H0
G30 P2 X137.87 Y24.31 Z-99999 H0
G30 P3 X121.24 Y-70.00 Z-99999 H0
G30 P4 X47.88 Y-131.56 Z-99999 H0
G30 P5 X-47.88 Y-131.56 Z-99999 H0
G30 P6 X-121.24 Y-70.00 Z-99999 H0
G30 P7 X-137.87 Y24.31 Z-99999 H0
G30 P8 X-89.99 Y107.25 Z-99999 H0
G30 P9 X0.00 Y70.00 Z-99999 H0
G30 P10 X60.62 Y35.00 Z-99999 H0
G30 P11 X60.62 Y-35.00 Z-99999 H0
G30 P12 X0.00 Y-70.00 Z-99999 H0
G30 P13 X-60.62 Y-35.00 Z-99999 H0
G30 P14 X-60.62 Y35.00 Z-99999 H0
G30 P15 X0 Y0 Z-99999 S6

@infiniteloop

Thanks for your help.
Removing the first T-1 P0; (line 5 below), did not solve the issue.
Removing the second T-1 P0; (line 13 below), did solve the issue (tried multiple times, seems to be reliably solved).

(Tried all 4 combinations of commenting out the lines).

Not sure why a T-1 P0; (Line 13) immediately followed by a T0 P6; (line 14) causes the T0 P6; to not complete.
Reminder: It runs through the macros, and even finishes executing tpost0.g, but never moves on to the next line.

Since it seems that the logic behind resurrection has been tweaked in 3.4, I'll wait for that release and see what happens.

Thanks!

resurrect.g that worked:

; File "0:/gcodes/HandleSet.gcode" resume print after print paused at 2022-01-31 21:07
G21
M140 P0 S110.0
G29 S1
T-1 P0
G92 X3.384 Y-123.624 Z0.300
G60 S1
G10 P0 S250 R170
T0 P0
M98 P"resurrect-prologue.g"
M116
M290 X0.000 Y0.000 Z0.000 R0
;T-1 P0
T0 P6
; Workplace coordinates
.... Following lines truncated...

@infiniteloop said in resurrect.g hangs at "T-1 P0" or "T0 P6":

Does it, or does it not?

It did, once, but then the problem returned. must have been a fluke.

@infiniteloop said in resurrect.g hangs at "T-1 P0" or "T0 P6":

To reduce complexity, you should ignore the tfree…, tpre… and tpost… macros. These should only contain comments,

That is now the case, the issue persists.

I'm noticing that I have a few difference between our resurrect scripts (I have an extra T-1 P0; in line 4, for example). but nothing that would explain the behavior.

I think there's a high likelihood that something in my configuration is causing T commands to get stuck for some reason, or (less likely) there might be some bug in RRF 3.3?

I'm at a loss, not sure what else to investigate or to check.... hopefully someone has a lead for me to pursue.

Added lots of echos to track the issue down, and It now happens even with the M116 in tpost0.g commented out.

Looks like it's hanging on T0 P6, actually. (never echos 13), but it looks like tpost0.g does terminate??

I'm at a loss... something in my configuration causing T0 P6; to never exit?

resurrect.g: Reference lines

; File "0:/gcodes/HandleSet.gcode" resume print after print paused at 2022-01-31 07:00;
G21;					    1 
echo 1 
M140 P0 S110.0;                             2 
echo 2 
G29 S1;                                     3 
echo 3 
T-1 P0;                                     4 
echo 4 
G92 X49.998 Y150.001 Z4.700;                5 
echo 5 
G60 S1;                                     6 
echo 6 
G10 P0 S250 R170;                           7 
echo 7 
T0 P0;                                      8 
echo 8 
M98 P"resurrect-prologue.g";                9 
echo 9 
M116;                                       10
echo 10
M290 X0.000 Y0.000 Z0.000 R0;               11
echo 11
T-1 P0;                                     12
echo 12
T0 P6;                                      13
echo 13
; Workplace coordinates;                    14
echo 14
G10 L2 P1 X0.00 Y0.00 Z0.00;                15
echo 15
G10 L2 P2 X0.00 Y0.00 Z0.00;                16
echo 16
G10 L2 P3 X0.00 Y0.00 Z0.00;                17
echo 17
G10 L2 P4 X0.00 Y0.00 Z0.00;                18
echo 18
G10 L2 P5 X0.00 Y0.00 Z0.00;                19
echo 19
G10 L2 P6 X0.00 Y0.00 Z0.00;                20
echo 20
G10 L2 P7 X0.00 Y0.00 Z0.00;                21
echo 21
G10 L2 P8 X0.00 Y0.00 Z0.00;                22
echo 22
G10 L2 P9 X0.00 Y0.00 Z0.00;                23
echo 23
G54;                                        24
echo 24
M106 S0.00;                                 25
echo 25
M116;                                       26
echo 26
G92 E0.00000;                               27
echo 27
M83;                                        28
echo 28
M486 S-1G17;                                29
echo 29
M23 "0:/gcodes/HandleSet.gcode";            30
echo 30
M26 S782;                                   31
echo 31
G0 F6000 Z6.700;                            32
echo 32
G0 F6000 X49.998 Y150.001;                  33
echo 33
G0 F6000 Z4.700;                            34
echo 34
G1 F5000.0 P0;                              35
echo 35
G21;                                        36
echo 36
M24;                                        37
echo 37

@infiniteloop said in resurrect.g hangs at "T-1 P0" or "T0 P6":

2. comment-out line 6 in tpost0.g; in that place, you will not need to wait for the one and only hotend to reach temperatures

Yup, that seems to solve it. I wonder if two or three successive M116 commands are problematic?

• There's one M116; in resurrect-prologue.g (which I need to counteract the retraction)
• another M116; in resurrect.g (which I can't control)
• and another M116 P0 in the tpost0.g called by the T0 P6; command (now commented out)

By the way, when issuing M916 on a freshly booted machine, this message appears immediately, but the procedure starts fine:

Hi,

Thankfully new to the wonderful world of resurrecting prints! had a thermal excursion 98% into a 12 hour print, and was frantically trying to learn how to resurrect while the printer was waiting.

I created a resurrect-prologue.g, as instructed, and issued a M916, but the script seemed to halt.

Using M291, I was able to find that "the issue" was line 12

T-1 P0

Commenting it out allowed me to resume and the print finished successfully before I left for work!

Quick celebration of the robust and well designed resurrection logic in RRF!

Was hoping to learn what is configured incorrectly in my setup that causes it to hang at that line.

I read the T-commands section of the G-Code dictionary a few times, but I still don't understand what could be causing the issue.

Thanks for trying to help!

Versions:

Board: Duet 2 WiFi (2WiFi)
Firmware: RepRapFirmware for Duet 2 WiFi/Ethernet 3.3 (2021-06-15) 

Config.G

; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Sun Jul 19 2020 22:30:32 

; General preferences
G90                                            ; send absolute coordinates...
M83                                            ; ...but relative extruder moves
M550 P"Goliath"                                ; set printer name
M665 R172.66 L511.07 B150 H329.8                 ; Set delta radius, diagonal rod length, printable radius and homed height
M666 X0 Y0 Z0                                  ; put your endstop adjustments here, or let auto calibration find them

; Network
M552 S1                                        ; enable network
M586 P0 S1                                     ; enable HTTP
M586 P1 S0                                     ; disable FTP
M586 P2 S0                                     ; disable Telnet

; Drives
M569 P0 S0                                     ; physical drive 0 goes backwards
M569 P1 S1                                     ; physical drive 1 goes forwards
M569 P2 S0                                     ; physical drive 2 goes backwards
M569 P3 S1                                     ; physical drive 3 goes forwards
M584 X0 Y1 Z2 E3                               ; set drive mapping
M350 X16 Y16 Z16 E16 I1                        ; configure microstepping with interpolation
M92 X100.00 Y100.00 Z100.00 E137.82            ; set steps per mm (E is 430 for bondtech, 137.82 for creality)
M566 X600.00 Y600.00 Z600.00 E1200.00          ; set maximum instantaneous speed changes (mm/min) (was [x,y,z]=1200)
M203 X9000.00 Y9000.00 Z9000.00 E6000.00		; set maximum speeds (mm/min) (was [x,y,z]=18000) Extruder changer to 6000 from 1200
M201 X500.00 Y500.00 Z500.00 E1000.00       	; set accelerations (mm/s^2) (was [x,y,z]=1000)
M906 X1000 Y1000 Z1000 E1500 I30                ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                        ; Set idle timeout

; Axis Limits
M208 Z0 S1                                     ; set minimum Z

; Endstops
M574 X2 S1 P"!xstop"                           ; configure active-high endstop for high end on X via pin !xstop
M574 Y2 S1 P"!ystop"                           ; configure active-high endstop for high end on Y via pin !ystop
M574 Z2 S1 P"!zstop"                           ; configure active-high endstop for high end on Z via pin !zstop

; Z-Probe
; Original command before 2021-10-23 was "M558 P5 C"!zprobe.in" H3 F500 T6000 ;A3 S0.01"
; ! because Z-strain-probe is inverted (Documentation says NC switches are best practice, I took the advice even though this isn't a switch per se).
; Reduced F500 to F50 for testing
; Changed G31 from "G31 P500 X30.31 Y17.5 Z2.2" to "G31 P500 X0.0 Y0.0 Z0.0"
; P5 (filtered digital) or P8 (unfiltered digital) 
; ^ enables pull up resistor on input

M558 P8 C"!zprobe.in" H5 F500 T6000 R1 ;A5 S0.01   ; set Z probe type to switch and the dive height + speeds (was 120mm/sec)
G31 P500 X0.0 Y0.0 Z-0.3                    	; set Z probe trigger value, offset and trigger height [Nozzle lifts when triggered, and pushes bed down slightly. total offset estimated ~0.2mm, changed to 0.3mm in order to reduce bed adhesion]
M557 R160 S50									;Set probing radius to 160mm with a probe spacing of 50mm

; Heaters
M308 S0 P"bedtemp" Y"thermistor" A"Bed" T100000 B4725 C7.060000e-8 ; configure sensor 0 as thermistor on pin bedtemp
M950 H0 C"bedheat" T0                          ; create bed heater output on bedheat and map it to sensor 0
M307 H0 B1 S1.00                               ; enable bang-bang mode for the bed heater and set PWM limit
M140 H0                                        ; map heated bed to heater 0
M143 H0 S135                                   ; set temperature limit for heater 0 to 135C

M308 S1 P"e0temp" Y"thermistor" A"Extruder" T100000 B4725 C7.060000e-8  ; configure sensor 1 as thermistor on pin e0temp
M950 H1 C"e0heat" T1                           ; create nozzle heater output on e0heat and map it to sensor 1
M307 H1 B0 S1.00                               ; disable bang-bang mode for heater  and set PWM limit
M143 H1 S300                                   ; set temperature limit for heater 1 to 300C

M308 S2 P"e1temp" Y"thermistor" A"Chamber" T100000 B4725 C7.060000e-8  ; configure sensor 2 as thermistor on pin e1temp (chamber thermistor)


; Fans
M950 F0 C"fan0" Q100                           ; create fan 0 on pin fan0 and set its frequency
M106 P0 X1 H1 T45                            ; set fan Thermostatic control is turned on based on heater1 (H1) temperature probe

; Tools
M563 P0 S"Extruder0" D0 H1 F0                  ; define tool 0
G10 P0 X0 Y0 Z0                                ; set tool 0 axis offsets
G10 P0 R0 S0                                   ; set initial tool 0 active and standby temperatures to 0C

; Lighting
M950 P0 C"e1heat"							   ; create output port 0 attached to heater 1\
M42 P0 S0.1									; Turn on Case light 10%

;Tool Selection
T0

; Load Custom settings
M501

;Setup power failure procedure
M911 S21.0 R23.0 P"G91 M83 G1 Z3 E-5 F1000"
;Set relative movement mode (G91)
;Set relative extrusion mode (M83)
;Simultaneously lift the head and retract filament (G1 Z3 E-5 F1000)

Resurrect.g (I generated this now artifically, didn't save the original, but confirmed behavior persists)

; File "0:/gcodes/HandleSet.gcode" resume print after power failure at 2022-01-30 20:59
G21
M140 P0 S110.0
T-1 P0
G92 X0.000 Y-150.000 Z10.000
G60 S1
G10 P0 S250 R170
T0 P0
M98 P"resurrect-prologue.g"
M116
M290 X0.000 Y0.000 Z0.000 R0
T-1 P0
T0 P6
; Workplace coordinates
G10 L2 P1 X0.00 Y0.00 Z0.00
G10 L2 P2 X0.00 Y0.00 Z0.00
G10 L2 P3 X0.00 Y0.00 Z0.00
G10 L2 P4 X0.00 Y0.00 Z0.00
G10 L2 P5 X0.00 Y0.00 Z0.00
G10 L2 P6 X0.00 Y0.00 Z0.00
G10 L2 P7 X0.00 Y0.00 Z0.00
G10 L2 P8 X0.00 Y0.00 Z0.00
G10 L2 P9 X0.00 Y0.00 Z0.00
G54
M106 S0.00
M116
G92 E0.00000
M83
M486 S-1G17
M23 "0:/gcodes/HandleSet.gcode"
M26 S684
G0 F6000 Z12.000
G0 F6000 X0.000 Y-150.000
G0 F6000 Z10.000
G1 F5000.0 P0
G21
M24

Resurrect-prologue.g

; copied from homedelta.g
; called to home all towers on a delta printer
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Sun Jul 19 2020 22:30:32 GMT+0300 (Israel Daylight Time)
;M42 P0 S0.0				  ; Turn off Case light
G91                       ; relative positioning
G1 H1 X9999 Y9999 Z9999 F3600 ; move all towers to the high end stopping at the endstops (first pass)

;M42 P0 S0.1				  ; Turn on Case light 10%
G1 H2 X-5 Y-5 Z-5 F1800   ; go down a few mm
;M42 P0 S0.0				  ; Turn off Case light

G1 H1 X10 Y10 Z10 F360    ; move all towers up once more (second pass)
;G1 Z-10 F6000              ; move down a few mm so that the nozzle can be centered
G90                       ; absolute positioning
;G1 X0 Y0 F6000            ; move X+Y to the center

M116 ;wait for all heaters to reach temp
M83 ; relative extrusion
G1 E5 F3600 ; undo the retraction that was done in the M911 power fail script

M291 P"Prologue Done"

tfree0.g

; tfree0.g
; called when tool 0 is freed
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Sun Jul 19 2020 22:30:32 

tpre0.g

; tpre0.g
; called before tool 0 is selected
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Sun Jul 19 2020 22:30:32 

tpost0.g

; tpost0.g
; called after tool 0 has been selected
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Sun Jul 19 2020 22:30:32
; Wait for set temperatures to be reached
M116 P0

The distance between the rods must be the same at the top and the bottom of the rod (carriage side and effector side) for the parallelogram to be created.

Either the smart effector needs to be rotated 60 degrees, or your carriages are incompatible with the smart effector and you need to make an adaptor.

Does that help?

Embarrassed / Happy to say that I found a loose connection deep in the mines of moria electronics bay.

Below is the result of wiggling that cable... That cable is very much static during the print, but I guess the vibrations/heat expansion was enough to cause issues?

Lesson of the day: don't use bare wire in screw terminals! (not even "just temporarily to see if it works!")

Thanks all for bearing with me during my somewhat crazy tangents.

@mendenmh

This has been suggested before, but I'm willing to give it a try again.
I'll expose the electronics bay and jiggle everything around while holding at ~250c.
Will report back.