WhatWouldAnEngineerDo

I had similar "issues", slicing the above model with the Arachne beta 2 slicer. For some reason, the slicer seems to invoke one additional extrusion move at 1/2 of the Bridge printing speed, immediately after the bridge line has been drawn, and before the "normal" Wall line begins, which seems to be what is being drawn as an orange blob in the above graphic. I captured a series of screen captures in the attached .PDF, overlaid with the corresponding gcode from Cura. Note that the F384.6 move is not created, if the experimental Bridge Settings feature is switched off. I was not able to change this behaviour by changing any other setting in Cura (and I'm pretty sure I tried them all.) As shown in the .pdf, I was able to make the blob disappear by modifying the geometry of the part but modifying the scale of the part only modified the scale of the blob. It did not make the blob go away. Why the blob.pdf

This is an old thread, but a continuing problem. For anyone researching this issue, I recommend this article: https://help.prusa3d.com/en/article/the-benchy-hull-line_124745

In my ignorance/innocence, I typed "PLA+" as the filament type, when uing Duplicate to create four custom material profiles. Now, those profiles do appear in the Manage Materials window, but if I select one, Cura identifies it as "Not Supported", turns the "Prepare" view's Material field orange and defaults the Print Profile selection to "Not Supported". This also hides all of my custom print profiles from that printer profile pull-down select widget. When I try to Remove those PLA+ material profiles in the Manage Materials window, the Remove button is greyed-out. Is there a manual edit I can make to a Local or Roaming data file, or will you need to modify the software to resolve this? PS: If indeed Cura does care what Filament Type is entered, it would be nice if Cura gave a pull down list instead of a blank field for this entry...

I had similar issues. In my case, I learned that if the selected Material profile is "Not Supported" by Cura (the material field in the Prepare view goes orange), then Cura changes the profile options to a default set, hiding all of the custom profiles. For me, it was enough to change the material type from PLA+ to PLA in my custom material profiles or just to select one of the generic material profiles, and all my print profiles were visible again. Your issue may differ, of course, but I hope this helps...

UPDATE 1: I seem to be able to create this problem by importing a material profile that Cura says is "Not Supported". If I change my filament choice to one of the built in profiles, all my print profiles come back. If I choose the imported material, that Material field goes orange and the selected print profile goes back to "Not Supported." No idea why these profiles are not supported, but hoping that this "bug" is actually a "feature" and all I have to do is reenter all my material profiles... UPDATE 2: AHA! Cura does not recognize PLA+ as a material supported by the Ender 3. When I change the material value to PLA, the profile works. When I change it to PLA+, the profile is "Not Supported." Now I need to find a way to remove the PLA+ profiles, which seem to be locked, like the generic materials.

I have same problem. (Screwed up on both of my PCs now.) Seemed to be ok until I tried to add a new Material Profile by duplicating and editing an existing profile. From that point on, I have not been able to see more than one print profile, even though importing says it succeeds and Cura increments the # after the profile name. I did manage to restart 4.7.0 one time and see all of the profiles, including multiples of the one I had been importing, but that the problem returned in that session (don't remember what I did) & restarting the program did not restore visibility of my profiles after that. Possibly related issues include, "Not Supported" appears in the settings window print profile selection field in lieu of the print profile name. Only a subset of the printer profiles was appearing when I pulled-down that selection field, but I would be able to see and select them if I used Manage Profiles. Now all but one are invisible under Manage Profiles. I have tried accepting the factory reset option, in the configuration corrupt popup. I have tried uninstalling all the past variations of Cura and reinstalling just one version. Problem remains the same, now, in every version of Cura from 4.1 to 4.7. Is there a particular file that I need to attach here to help with debugging this?