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Priming of support hotend on single filament print on UM3


tonnesfn

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Posted · Priming of support hotend on single filament print on UM3

I have successfully printed dual material with support on UM3 using Cura, but when I disable support to only print with the main material, the printer prints the first layer fine, then extrudes a bit of support on the side of the model, then continues printing the rest of the model with the main material. The extruded support sometimes sticks to the tip and ruins the print, so I have to watch the print and remove it by hand before it continues.

Is this an intended feature for some reason? Is it a bug in the software, or maybe just a setting that I can disable somewhere? I guess I could remove the support cartridge or somehow disable it, but am looking for the quickest way to do it since I will be switching between single and multi material quite a lot.

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    Posted · Priming of support hotend on single filament print on UM3
    Is this an intended feature for some reason? Is it a bug in the software, or maybe just a setting that I can disable somewhere?

    Probably the second printcore is still selected as "Platform Adhesion Extruder" in Cura.

    In addition you should set the printing- and standby temperature of the second printcore to zero, if it is not used for this print.

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    Posted · Priming of support hotend on single filament print on UM3

    The correct print core was selected as "Platform Adhesion Extruder", but I tried setting the temperature of the second core to 0. It just resulted in the printer hanging after the first layer because the support print core never reaches temperature (I assume).

    I am running the 2.4 beta - could it be a new bug?

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    Posted · Priming of support hotend on single filament print on UM3

    When I re-enabled support and selected core 1 as the support cores, then disabled support again, it works as intended. Seems that even though cura hides these settings when you disable support, some of them are still used somewhere.

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