Print stopped with no error
So was printing a file and at a few points (randomly, as this is the 2nd time this has happened) it would stop stating crash detected. I looked at the nozzle, no build up. No blobs on the print. Hit continue and it continued for another 30 mins to an hour. This happened 2 times. Later I come back to the print and the head in sitting on the print, the temps are still at what they should be (PLA settings) but it is not printing. Th screen shows Prusa i3 MK3S is OK.
The first time this happened yesterday it stopped at 64.10 mm. This time it stopped at 71.90mm. I have never experienced this before, though I have never printed something with this overall volume (19cm wide by 12cm tall, x 7cm deep). I cannot continue the print, and there seems to be no option to do much. If I push in the button I only get the following options:
Tune
Statistics
Fail stats
Support
There seems like nothing I can do but shut down. the last time I followed some instructions on resuming the print, but when I tried that there were 2 major issues with what 3 different online people were saying. 1st, I had to reset home. Without doing that, after a power cycle, the print head assumed it was at z=0 when it was not... None of them said anything about this, but fine, I figured that out. Good thing the print wasn't in front of the home area.... That was fixable, but the 2nd issue was not. The x (left-right) was offset for some reason. It started to print about 5mm to the left of the actual print. I don't understand that at all, but just wanted to point this out as well.
This print was to take about 8 hours printing in PLA. Prior to this I was able to print a similar file (had to adjust the mesh at the bottom adding a tab hole I missed but that is down by the 6mm level) without this issue, though it did 'detect a crash' once. Before that I printed a mask in PETG that took 13 hours without issues.
Between the PETG and PLA I did (as I usually do) run a cleaner filament through the printer. I cannot say I am a Prusa guru, but looking online, I can see no issues like this... I have just wasted 1/2 a roll of filament and 2 days with no clear reason for this problem...
What does the printer's fail stats log say (LCD menu)?
With the power off, move the axes by hand; are they smooth? Does the resistance stay the same over the whole range?
Clean and lubricate the smooth rods, check they are not damaged/scratched. Check the idler pulleys are not clogged, out of line, or damaged (loosen the belts and try turning them with your fingertip, are they smooth?)
With the belts loose try turning the stepper motors by hand; are they smooth?
Retighten the belts until they just begin to make a low musical note when plucked...
If the printer works, make your next print this:
https://www.prusaprinters.org/prints/46639-tension-meter-for-the-gt2-belts-of-i3-mk3s-or-prus
It MUST be printed in Prusament PETG or the spring tension will be wrong.
Let us know how you get on.
Cheerio,
RE:
FWIW I printed this tension meter in Prusament PETG and afterwards, out of curiosity, I printed another from Geeetech PETG. Both gave exactly the same value. Who knows about other brands, but I suspect that most PETGs would give similar results. Possibly it depends more on print parameters (nozzle temp. etc.) than on the filament brand (just my guess..).
RE: Print stopped with no error
I suspect the SD card lost contact. Start a test print and let it print for awhile. Then pull the card out intentionally. If you get the same results, that's a good indication of the cause. I can't find the link right now, but there is a shim you can print to add to the card socket that will help it maintain contact.
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RE:
I get the same with one of my printers. I finally just disabled crash detection. This is before and after a full rebuild with new rods, new bearing, all bearings aligned correctly, y Axis bed carriage bearings are correctly tensioned with the clamps, belt tension all good. All calibrations pass and are good. All bearing run smooth and are greased correctly. I have not changed the panic cable yet. I have also did factory resets, and updated FW from 3.9 all the way though to current with a Factory Reset between each upgrade. It still did it.
I call them "False Crashes"(Y Axis). No blobs, no bumps, no layer curling, no steel sheet misalignment, nozzle clean(Revo). One day I might just replace the power panic cable. Ohh and all cables connecters seem good and well seated. Fuses all good and seating well. No Zip ties hitting anything.
RE: Print stopped with no error
Did you check the SD card socket?
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RE: Print stopped with no error
IN what way? Trying different SD Cards? I have printed from SD Cards and I have more than 4. I mostly use Prusa Connect/PrusaLink.
RE: Print stopped with no error
Does the failure happen only when using SD cards or anytime randomly?
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RE: Print stopped with no error
For me it is SD Card or connect or prusalink, even with no card. Although I have not fully tested this,as it will take many hours and much filament.
RE: Print stopped with no error
Confirming that it happens with other than the SD card would be helpful.
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RE: Print stopped with no error
A test for a possible developing card slot problem is if the card is not recognized and read immediately when inserted. If you have to "fiddle" with it to get it to read, you need the socket shim. Sorry, still looking for the link.
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RE:
Found it:
https://www.printables.com/model/15388-prusa-mk3-sd-card-slot-fix-not-reading-the-card-at.
Crap, link is broken, maybe somebody can recover it.
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RE: Print stopped with no error
Mine works immediately. Idk about the OP though.
RE: Print stopped with no error
Try this:
https://www.printables.com/model/15388-prusa-mk3-sd-card-slot-fix-not-reading-the-card-at
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