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

16 Comments

Raphael

May 01, 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?

Kristian Widén

May 02, 2019

Replying to

@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.

Makertech 3D

May 02, 2019

Replying to

@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.

Kristian Widén

May 02, 2019

Replying to

@Makertech ok, that makes more sense. My question was due to not seeing how this could happen for any normal reason. My issue was on a single extruder, but i believe that the pauses could have been during layer-switches, if you see my picture the blobs are mostly on the same place and i had the option to switch layer at the hardest edge selected.

Could it be that the temperature have dropped slightly on the hotend so that the printer pauses to get the heat up again before starting on the next layer?

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.

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.

Makertech 3D

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).

Apr 20, 2019

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

Andreas Wick

Apr 21, 2019

Replying to

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