Dim3nsioneer

Is that always the case or did that happen only for the first print after firmware upgrade (for both upgrades, first to the beta and then back to the stable version)?

May I ask if the quality is bad or if there is no filament extruded at all after blob+skirt?

You might want to keep an eye on the printcore cooling situation. This version seems to block almost half of the front inlet for the printcore cooling fan.

You should be able to tell which material has caused the runout break by the position of the right printcore nozzle.

I would highly recommend not to tinker with the S5 firmware as you will certainly void your warranty. However, there is a developer mode which allows you to login to the Olimex board. From there you would have to find your way to the according Python code. Chances that you brick the printer are very high. In order to safe time I recommend printing more than one object at a time and update to the latest firmware; from version 5.1.7 on active leveling is significantly faster.

Uhm, well, at some point last year it seemed as such steps would not require more than a few months for Cura to reach that number... 😜

Co-polyesters such as PETG very good in causing chipping. Renewing the glue layer for each print might improve the situation.

You should always first contact your reseller in such cases. He provides first level support and checks possibilities like the one you suggested.

Such a change is not possible as you would have to change the printcore which is not supported during a printing. But you can change from one color to another of the same filament by using the change material function during a pause.

Es gibt in Cura 3.6 zwei Optimisierungseinstellungen dafür. Die eine ist für das Gehäuse und sollte eigentlich standardmässig aktiviert sein. Die andere ist für die Füllung und ist unter Experimentell zu finden.

Did you check out this thread? If you are into tinkering, this might be an interesting alternative.

It's most likely not going to happen. The reason is the fact that the Ultimaker 3 actually has two boards, one being the Olimex board with all the connectivity stuff like WiFi etc. on it and the other one called motion controller being an upgraded version of the UM2+ mainboard. While the Olimex board is run by a Linux image the motion controller board is driven by an older Marlin version. But you might want to check Octoprint for your UM2+.

Bei der Ultimaker 2 Familie werden die Daten zeilenweise über USB geschickt was zur von @Smithy angesprochenen Anfälligkeit führt. Beim Ultimaker 3 und S5 wird der ganze Druckjob zu Beginn in den internen Speicher des Druckers verschoben. Ist also eine Frage des Modells.

Flexible materials seem to trigger more often wrong flow-events than other materials. I would expect that Ultimaker is currently working on improving that situation and providing a fix in a future firmware version. Something you can do for the time being is to disable the flow sensors in the settings menu of the S5. This will prevent the printer from a wrong interuption but of course might lead to a lost print if a real flow issue occurs.

When this happens to me I usually use some tweezers and/or turn the printer around and shake it a bit.

I would check the cooling settings. With cooling off for both materials they really sticks very well to each other.

Is the login at contribute.ultimaker.com with the community user supposed to work? I e.g. only get an error message.

Filling out that new form does not result in any kind of confirmation e-mail either (as didn't the aluminium plate form); at least it did not for me. Maybe some kind of short receipt would be a good idea? It would not create that slightly uneasy feeling that the submission might not be considered due to a technical problem.

That might indeed be a good reason. Using some postprocessing scripts or plugins which alter some parameters at a certain height might be another or an extension of the first one. The more efficient user would of course not sit in front of the printer all the time but check from time to time. Therefore a layer number would give him/her an idea when might be a good time to have a peak again. You could ask the same question for Cura. It's in there. Why not giving the user a simple tool to compare the physical outcome with the layer view in Cura? Personally I would prefer simple solutions which have a chance to be implemented in reasonable time rather than fancy stuff that is blocking development ressources for months or years while people out there use the printer with no improvement at all (aka KISS=keep it short and simple). I assume the meaning of the UX designer is not the only criterium for such changes but feedback is also included in such decisions? Anyway, I have to admit that this might not be the most pressing issue in the S5 firmware. And sorry for the late reply.

Be aware that you will probably get a color change at your print head with temperatures around 300 degree or higher.

So this might be a good starting point for colorFabb Ngen too?

Look for "start x" and "start y" in the detailed settings.

Oberflächlich ja, aber unter der Haube wurde inzwischen einiges etwas angepasst, das zeigt ein direkter Vergleich der beiden Repositories.

Grundsätzlich kann das GST Netzteil mit einem UM2 eingesetzt werden; neue UM2+ werden auch mit einem solchen ausgeliefert. Die Erfahrung zeigt, dass UM2 mit älterer Firmware Probleme mit den zusätzlichen Sicherheiten im GST Netzteil erzeugen. Meine Empfehlung wäre, den UM2 auf einen UM2+ aufzurüsten und mit der neusten Firmware zu versehen, dann sollte der Betrieb mit dem GST-Netzteil kein Problem sein und der aufgerüstete Drucker macht dann erst noch mehr Freude (Olsson Block, Feeder mit Getriebe, genauerer Temperatursensor etc.).

It's a well distributed bug in Cura, Cura Connect and the app which Ultimaker will hopefully fix anytime soon. You might get rid of it for some time by using the Cura Connect reset on your printer.