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Andreas Wick
Apr 16, 2019
  ·  Edited: Apr 21, 2019

Printer stops for a second and then continues

Hi together,


I am having the problem, that the printer stops on random layer changes for a few seconds which is causing blobs... On the benchy the problem gets worse the smaller the layer is.

One time the printer stopped completely...


Any suggestions?

16 comments
0
deró
Apr 16, 2019

Are you printing via SD card, octoprint or win/OSX USB cable?

0
Andreas Wick
Apr 17, 2019

Via SD no PC connected

0
deró
Apr 17, 2019

Can you try a different SD card or format this one?

0
Kristian Widén
Apr 17, 2019

I had the same issue on my first prints. Then i printed a temp-tower for another brand of PLA and the printer hung high up in the tower. It proceeded after a pause, which caused it to reboot, since then, i haven't had that issue at all. I have printed in lower temperatures, since then, which is what looked best on my temptower, but it seems strange that it should have anything to do with the issue.

0
Andreas Wick
Apr 17, 2019

I made some more attempts with the same problem. I tried also a different SD and a formatted one as well. Some impressions:



Any suggestions? Thanks for the help so far!


0
Andreas Wick
Apr 19, 2019

Any help? I am not able to print... :(

0
fg
Apr 20, 2019

Strange that this happens to you via SD card. I had this issue when my PC/Cura was hanging while printing.

0
Andreas Wick
Apr 21, 2019

This is really strange... I also checked the right voltage settings, the mechanics and so on... No problems there...

0
Makertech
Apr 23, 2019

Could be an issue with the SD card reader/writer if it's stopping at the same point each time.


Also a suggestion to improve the quality would be to lower the temp, and to also lower the flow rate in cura (Material -> Flow).

0
Ryan Andrews
Apr 25, 2019

If it helps any, I started receiving this issue when I upgraded the firmware to the DSE firmware. It doesn't happen on every layer, but it does happen occasionally at 200 deg print temperature.

0
Kristian Widén
Apr 26, 2019

I had the same issue, using SD card. But it fixed itself midprint. Attached is the picture of that print. You can see where it paused and caused blobs to the left of in the picture, then it locked up which made the printer to reboot before resume, Blob from that can be seen next to the bridging section. After that the print finished the last part perfectly and I haven't had the issue at all.


0
Raphael
May 1, 2019

I have got kinda the same problem with the blobs, but in my case its with my second extruder, the first one prints pretty normal no blobs or anything like that an when i printed the benchy with the second extruder there where blobs all over the model and he even stopped before the print was finished and rebooted. I dont think it would be a problem on the SD card bc then my first extruder would have the same blobs. As far as i have read in this post this will resolve atomatically and there is no proper way to solve this problem?

0
Makertech
May 2, 2019

@Raphael Blobs on the second hotend only is likely a hardware issue, things to check:

Is the ptfe tube pushed in all of the way? Is the idler arm on too tight, it it is try loosening it for a better grip against the filament. Check your stepper driver trimpot for the second extruder, does it's position match the first extruders trimpot, checking the vref value with a multimeter is the most accurate way of doing it but this level of precision isn't entirely necessary. Vref can be measure by checking voltage between the trimpot and and ground/negative.


If you're still having issue it may be useful to increase the retraction distance in cura with extruder 2 selected (Material -> retraction distance).

0
Kristian Widén
May 2, 2019

@Makertech So the stopping for a couple of seconds while pushing out filamend and then continuing moving is due to extrusion hardware issues? Is there some kind of sensor that feels that the extruder cannot push the filament and then the hotend does not move? Because that is what happened during a couple of my prints until it stopped happening after it hung up and rebooted.


0
Makertech
May 2, 2019

@Kristian Widén During dual extrusion the pauses between the first 2 layers after a switch is normal and is because of the way cura handles temperature, we're currently working on a way for fixing this in cura.


Random pausing during a print is not normal, and looks to be caused by gcode/touch screen firmware issues. We're working on a software update that should hopefully resolve these issue.


The filament sensor is binary, it only senses whether filament is present or not, it doesn't actively measure the flow of filament.

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