burtoogle

Hello @atzouris. Have you built using cura-build-environment and cura-build repos? That's what I use to build my releases. I would think the best place to ask questions would be to open an issue on either the Cura repo or the cura-build-environment or cura-build repos.

Hello @distance28, I can't tell looking at those fragments what the problem is. So, is it possible for you to save the project file (File -> Save) and attach the resulting .3mf file to this thread? Thanks.

That's right.

Hello @MakMakMo, set the max comb distance without retract to something like 10 or 20.

FYI, I submitted a PR (https://github.com/Ultimaker/CuraEngine/pull/1014) to fix this, don't expect to see it in Cura anytime soon.

Hello @spencerdiniz. I don't know what undefined means in the above project summary, I get the same for my printer (a Kossel delta) so I wouldn't worry about that. I printed a couple of the hooks on my machine and they came out fine. With parts like this, cooling is the key to success as they tend to overheat due to the small area so I am using 100% fan. The picture shows the part cooling nozzle pointing right at the (naked) hotend heater block which is not going to help at all as it will be cooling the hotend. Is that why you are using such a high temp (225 for PLA?) I am currently printing PLA at 200 with the bed at 45 and get very good results. Looking at your project, I wonder whether you are over-retracting? I think your printer has a direct drive extruder (not Bowden) and 4mm of retraction sounds an awful lot. I'm using 4mm of retraction with my Kossel's Bowden extruder and another printer I have which isn't Bowden is using 2mm of retraction. Hope this helps!

Hi @phantom, the answer to this little mystery is that setting the slicing tolerance to exclusive had the effect of changing the bottom layer. Setting the slicing tolerance to middle shows the missing layer which is indeed shrunk as you can see from the image. This looks like a bug to me because I would have thought that the first layer horizontal expansion should not be influenced by the slicing tolerance.

Hi @klaus_kraemer, I sliced the top (narrow) part of your model and it printed very nicely using a 0.4mm nozzle and 0.5mm wide lines. Layer height was 0.1mm. I wonder if your print is suffering from overheating. You're actually printing very slowly (4mm/S) and maybe the nozzle is heating the model too much and so you are getting poor definition? If you do try using a smaller nozzle and 0.5mm wide lines be sure to enable the overlap compensation and also set the Mininum Wall Flow quite high (I used 80%) as this will stop a lot of extra travel and tiny extrusions that would otherwise happen. Hope this helps.

Hello @klaus_kraemer, it would help a lot if you could attach the project file (do File->Save) to this thread. Thanks.

Very odd, I don't use extra prime at all and I don't get oozing and underextrusion following long travel moves. Try using combing mode no skin and set max comb distance with no retract to something like 10.

Hello @spencerdiniz, welcome! To help us understand what's going wrong. Please save the Cura project (File->Save) and attach the .3mf file to this thread. Thanks.

Sorry @phantom, those are not project files, they only contain the model and not the settings. Please do File->Save (not export!) This catches a lot of people out and I have requested that the menu gets altered to make it more obvious but the Cura developers didn't want to do that.

Hello @phantom, in those two files, the settings at the end of each of those files do not contain a value for xy_offset_layer_0 which is what the Initial Layer Horizontal Expansion setting is called internally. So, for some reason, you are not setting that to a non-zero value. Can you please attach the project file (.3mf). Thanks.

Please create a new thread about this and attach sample gcode files. Thanks.

Three obvious differences in the gcode are the the Cura sliced parts are not using any cooling fan, the walls are being printed faster than the Slic3r sliced parts and you are printing fewer parts. All of these things will tend to cause the parts to overheat.

H @jens3, thanks for the project file. OK, things you can do to improve this are: 1 - Enable the Optimise Wall Printing Order. 2 - Set a User Specified z-seam alignment with x/y values that position the seam where you want it. 3 - Set the Seam Corner preference to None. 4 - Set the Max Comb Distance With No Retract to 10. 5 - Reduce infill density, 70% is OTT for gyroid. Hope this helps!

Hello @Zbyszko, you don't provide any details of your settings so I have to guess that it is underextrusion following a long travel. To cure that, set combing mode to no skin and the max distance without retract to 10. Hope this helps.

Hello @jens3. Actually, it's File->Save (not export). Exporting just includes the model. Saving, includes the settings and the model. I know it's not obvious, is it?

Hello @jens3, I would like to help so please save the project file and attach to this thread so I can investigate. Thanks.

Hi @Ridgerunner2270, thanks for the gcode. As you can see from the attached images showing that gcode. There are no lines/layers missing. So it is more likely to be a problem with your printer that is somehow triggered. Perhaps there is a setting that can be adjusted?

Hello @Ridgerunner2270, please could you attach the gcode for one of the prints that has missing lines.

Hello @neotko, it's not the fact that it combs on the infill when you use that mode that is the problem. The problem with that mode is that it is unaware of where the part's walls and skins are and so will happily cross a skin region (dribbling as it goes).

Hey @alexjx, you can save another 20+ mins of printing time on that part by enabling the wall print order optimisation.

Ah, yes, it's the avoid printed parts when travelling setting, turn that off. I still recommend that you do not use combing mode within infill.

BTW, I reckon that if you use gyroid infill you could probably halve the density and it would still be adequate...