kennedyjm

I am also having a problem where the extruder just stops (no feeder wheel turning) on certain prints that I have sliced with CURA within maybe 2 hours of starting the print. It has happened on PLA and PETG, where I used heat settings of 220/50 for PLA and 240/70 for PETG. The printer I am having the problem with is a Mingda Rock 3 Pro where I had previously changed the hot end and extruder to Slice Engineering and Bond Tech. I think (think) I was able to print one of the early files that had quit on the Mingda successfully on a different printer, an Artillery XS1 V4. I have tried several things including putting a heat sink on the extrusion motor – apparently a heated-up extrusion motor is not the problem. I have been able to print the files if I use the Repetier slicer, but not the CURA slicer; I think the problem started when CURA version 5 came out. I first thought perhaps the issue was something to do with round designs as it happened on a round bird house in PETG and a round flowerpot in PLA. Then it happened on a rectangular flowerpot I was making to put on my window sill. In both cases I tried the Repetier slicer (with whatever version of CURA that Repetier used) and it got past the point where it stopped and successfully finished each print. I have communicated the problem to both Mingda and to Slice Engineering; I have yet to reload the software supplied by Mingda as I am attempting to eliminate other possibilities first. Slice Engineering did suggest that they had heard of some files not printing with one slicer and being fine with another… At the moment I happened across this nine-year-old complaint and offer this as additional evidence that you are not crazy. Hopefully I will get to the end of it.

Thanks, I’ll try the finger and thumb test. The prints are about 16 + hours so I will not be able to do so until tomorrow – I lost the morning to redoing the E steps thing. I don’t like to print while I am asleep – I’m afraid I don’t trust the equipment enough (including the smoke alarm I installed just above it!). Jim K

I just re-did the E steps, and they are spot on. They have not moved since I calibrated them last. Also, the print I was waiting to complete has finished without any problem. Now I am left with the notion that the motor likely overheated for some reason and I think that, since I added a heatsink to it a few weeks ago, I have to wait and see if I can make it happen again. I do have other items I must print on the printer - so, I am at a bit of a loss. Thanks for your help. Jim K

I got to thinking that, as I was printing PETG at a fairly high temperature (240c), it may very well be the extruder motor is heating up after some period of time has passed – particularly in the heat wave we had here in Knoxville for the last few weeks. The fact that the extruder motor stops completely is the troubling issue. I did put a heatsink and cover on the extruder motor (image) shortly after the first instance, but… In any event I will check Estops after this print finishes. Jim K.

Thank you. I had recalibrated the E steps after I did the hot end swap with the Mosquito/Bondtech combination. I will recheck that soon, I am currently running a print on that printer – again, in Recommended mode. I should have done so earlier in light of it having failed with both CURA 5.1 and CURA 4.12 I will let you know if I find any anomalies. Thanks again, Jim K.

That’s great. I am trying to understand – if you look back into how this conversation started – why my printer stopped extruding several hours into a print. Several prints. What I found and reported to you was, that when I used the “Recommended” mode I did not have this problem, but the Recommended mode does not tell you what has changed because it does not tell you what each of the features is. I think you got off on a track telling me how you categorize each of your prints and lost track of what my problem was.

Yes, I understand that – however, that is true for the Custom settings, what I was saying is that it printed alright in the Recommended settings and for this there is no list of what the settings actually are. Are you suggesting that the Standard settings are the same as Recommended and I should go with the original unchanged of the Standard settings?

I am using CURA 5.1 and I can use any of the various qualities (Super, Dynamic, Standard, Low) in the Recommended mode. I see (under Recommended) that there are three Print Settings: Infill (%) – which is changeable, Support, and Adhesion. The Support and Adhesion seem pretty much fixed, so I don’t know what they are set at or what any of the other settings are in Recommended mode. If I go to the “Custom” mode, I can, of course, set any of the parameters. My apologies, but I am not sure what you are saying. Thanks again. Jim K.

Well that one did complete without any problems. The difficulty I have is that I don't know what settings it changed since there is no listing of Recommended settings.

I did put in a heat sink and built a new cage around the extruder motor after the first time this happened (about a month ago). Since I communicated with you I have tried changing the line width (from .44 to .35) - had another failure. Then I changed the wall thickness from 1.76 to 1.2, had another failure. Then I selected the "Recommended" settings in CURA 5.1 - cannot find what they are - and it printed fine. I now have another one on the printer at the Recommended setting, will let you know if it completes. Jim K.

Here is the file I was printing from on the last failure: MRPETG_CURA12LowQualTray alone Latest11H49M.gcode

RaisersLowQual11H34M.gcode 4.31 MB · 0 downloads Well the older CURA (4.12) failed as well and I think it failed a few layers earlier which you can see from the image attached - I am also attaching an image of the control window when it quit extruding. Jim K.

RaisersLowQual11H34M.gcode 4.31 MB · 0 downloads

Thanks Greg, I appreciate the help. It has stopped at about 6.5 mm into the print and you should be able to tell approximately where that was from the image in the last post and the file in this one. Jim K. MRPETG_Tray for 2 Pot plus RaisersLowQual11H34M.gcode