I had 3 successful prints before, but this one is failing. Not stringy messes, but the printer seems to give up…
The prints are failing at different but early times (0% to 4%) Right when it stops the Temp shows 0deg and then the head goes to Home. What gets printed looks good.
When selecting the file to print.
At the point of failure.
Also…when I hit Stop it seems to crash and I can’t get off this screen. Have to power Off.
I looked at the gCode and there isn’t any Temp changes in the printing.
Guide Spacer - X Guide v3_35695065.gcode (450.3 KB)
Hi!,kalmdown
So the print data that succeeded 3 times before failed this time?
So you are trying to output a 3D printer and it fails at 0% to 4% and stops?
You have attached a Gcode file, but can you attach the STL data of the model if possible?
I don’t know the shape of the model, so I checked it with Gcode’s path tool, but it seems to be moving in a strange way, so STL data might be good.
Hi kalmdown,
I had a similar problem and it ended up being down to a loose thermistor making the machine read a large temperature drop and thus throwing an error.
I’d recommend looking through/ posting your log files to see when the machine changed the temperature to 0/moved to home to see if you’re having a similar problem or if not, it will at least give a better idea on what might be happening
This print has not succeeded. A previous model printed properly…as a note that the problem seems specific to this model and not the printer.
This model has failed at 2%, 1%, 0%, 4%.
STL’s attached in Zip.
Guide Spacers.zip (28.8 KB)
How do I get the log files?
Will it be easy to find these activities? Is the log file just the gCode that ran?
To get the logs you can plug a usb drive into the printer and go to settings and export logs.
The log files aren’t the code that you sent to the machine, it says what the machine actually did along with timestamps. This includes the code of moving/extruding and whatever, but also includes errors, status messages about the machine, etc.
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OK…I see a few of the following…
1615935241578,2021.03.16 22:54:01.578,ERROR,SC-FW,temperature of hotend dropped abruptly! temp: 172.70 / 220
1615942654585,2021.03.17 00:57:34.585,ERROR,SC-FW,thermal run away of hotend! temp: 209.00 / 215
Logs attached:
SnapMaker Logs.zip (117.6 KB)
It looks to be similar to the issue I had. I was able to fix it by reseating the thermistor and trying to avoid prints that excessively vibrate the print head (I was able to do this by switching infill type in cura). Unfortunately, I did both at once so I don’t know if just reseating the thermistor will work but it’s worth a try.
If you continue having problems you could try adding some thermal paste as noted on other posts in the forum, just make sure if you do so that you do not use something conductive. I personally have not needed to use thermal paste however.
Are there instructions for “reseating the thermistor”? I Googled and looked at SnapMaker site…and found “How to replace…” but am not sure if the instructions are appropriate.
On the hot end (you can look at a spare to get familiar with it before messing with the pre-installed one) the thermistor is just inserted into the heating block, held in through what looks like friction, and being pressed against the block due to the bent wires. The thermistor is what is connected to the two thinner wires. What I did is just make sure it is pushed in all the way, and that when reinserted into the 3d print head the connection pushes against the wires, keeping the thermistor in place.
Reference photos
This bug is fixed with the latest FW!
Please update…
It worked with the new firmware…Yea!
Thanks bobby4718 for the suggestions. I learned about the logs, which is useful.
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