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You have underextrusion on some of those layers - the layers that split and also the layers of lighter color - second picture from last above. That's probably causing all of your issues.
Lots of things can cause underextrusion. The most likely are:
1) The white teflon coupler - consider replacing it - you should have gotten 2 spares with your printer or you can get some at 3dsolex.com - not expensive. But if you print only ABS you might want to get the IPM.
2) spool of filament getting near the end - with the higher curvature towards the end of the spool it takes much more force to get it through all the parts. consider moving the spool to the floor and printing more slowly (half speed).
3) Change in settings - did you recently speed up your prints? Or lower the temperature? I assume not - but it's also possible your temp sensor is falling apart very slowly - they tend to read high (higher resistance is higher temp and if the connection is loose they tend to read easily 10C high or 20C high or even worse meaning the nozzle is much cooler than you think). You can test with this video if you have a piece of PLA laying around:
Cura 5.7 is here and it brings a handy new workflow improvement when using Thingiverse and Cura together, as well as additional capabilities for Method series printers, and a powerful way of sharing print settings using new printer-agnostic project files! Read on to find out about all of these improvements and more.
S-Line Firmware 8.3.0 was released Nov. 20th on the "Latest" firmware branch.
(Sorry, was out of office when this released)
This update is for...
All UltiMaker S series
New features
Temperature status. During print preparation, the temperatures of the print cores and build plate will be shown on the display. This gives a better indication of the progress and remaining wait time. Save log files in paused state. It is now possible to save the printer's log files to USB if the currently active print job is paused. Previously, the Dump logs to USB option was only enabled if the printer was in idle state. Confirm print removal via Digital Factory. If the printer is connected to the Digital Factory, it is now possible to confirm the removal of a previous print job via the Digital Factory interface. This is useful in situations where the build plate is clear, but the operator forgot to select Confirm removal on the printer’s display. Visit this page for more information about this feature.
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gr5 2,170
You have underextrusion on some of those layers - the layers that split and also the layers of lighter color - second picture from last above. That's probably causing all of your issues.
Lots of things can cause underextrusion. The most likely are:
1) The white teflon coupler - consider replacing it - you should have gotten 2 spares with your printer or you can get some at 3dsolex.com - not expensive. But if you print only ABS you might want to get the IPM.
2) spool of filament getting near the end - with the higher curvature towards the end of the spool it takes much more force to get it through all the parts. consider moving the spool to the floor and printing more slowly (half speed).
3) Change in settings - did you recently speed up your prints? Or lower the temperature? I assume not - but it's also possible your temp sensor is falling apart very slowly - they tend to read high (higher resistance is higher temp and if the connection is loose they tend to read easily 10C high or 20C high or even worse meaning the nozzle is much cooler than you think). You can test with this video if you have a piece of PLA laying around:
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Mithartridge 0
Thank you!
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