redslifer

I think it also is a software problem. Even if other slicers give this problem (to me they do really less), it still may be caused by some common way to handle those layers that are different to the previous one or even next one. Hardware wise I can't think of anything causing it. The only other thing could be the firmware...

To me it isn't the layer being cooled too fast, it only happens on singular top and bottom layers. I am very pissed at this point.

Other things may slightly hep could be finding the right Z height proportion to use depending on the gears and stepper motors. For the cr-10 for example it is better to change the layer height by 0.04mm, so 0.16, 0.20, 0.24 and so on. I can't find the right differences to use for your printer, you should ask someone here. Then the retraction may be helpful too. I found the speed has the most important role for bowden extruders. I actually have it set at 75mm/s with 8.5 mm. The z-hop when retraction is at 0.5mm, and the min and max fan speed too. For PLA I am using 50 to 80% fan speed, though disabling it for the walls and maxing them for the infill could be the best thing ever. The infill is to be done for last, in the photo I posted I did " Internal wall -> External wall -> Infill" and the infill shell disappeared. Now I am trying to do "External wall -> Internal Wall -> Infill" to see if it may change that delamination issue. All of this after having correctly calibrated X,Y,Z and extruder esteps and flow of course. 2 Stepper dampers for X and 2 for Y axis may help too. Don't try to use them for the Z and the extruder, though.

He has the same printer as me, a cr-10s.

I tried again with slic3r another object, with the same result as before. the mid variation section has an half missing layer (underextrusion? Not really since it completely misses that line so you can see the other part of the wall and all the internal piece) near the edge, as I explaided before it is the seme problem as your, depending on the shape and vertical or horizontal position of it. As I said with cura this underextrusion is more evident, but anyway I asked a friend to try the gcodes I used for the previous and this model print and he doesn't have this underextrusion in those layers. It is really strange, since I have the jerk to 2 but 10 doesn't make any difference either. I think cura and slic3r use different movements to print the item, and a weird movement happens when crossing an edge and on the previous or even next layer (like in this last case) the section is much different. I would try to have all the time the fan off to help the adhesion, but it would make it impossible to print the infill, so it is a problem since no one slicer has an option to use a different fan speed for the perimeter and the infill.

Cura and slic3r have much different functions, but the one that are shared are all set the same. If it was just a temperature issue, it wouldn't explain why it only happens on the biggest section variation, being the smallest section or the biggest depending where it is placed. In case of an internal hole, if the hole is vertical it happens on 2 layers only, the top and bottom one. If the hole is horizontal like in your photos, it happens in all the layers between those 2 top and bottom layers. Someone more acknlowledged about the slicing process and what is done when sections change like that may rule out the possible causes, but I am currently out of ideas.

This is the only issue leftover using Slic3r, watch the photo and you will notice when there is an huge variation of the section, near the edge on the same layer where the section is bigger there is an underextrusion. I say this because I think it is related to the issue you and me are having. Using cura that layer is completely separated and the top and bottom part will completely split.

I honestly highly doubt it is 100% hardware related. I have a cr-10s and the amount of layer shift / underextrusion is exacly the same, so being 2 completely different machines, being an hardware fault I would expect to see one to be less or more visible than the other. Same as you, tensioning the belts and screws or the extruder differently don't change the effect at all, only changing the slicer really does. Online I remember someone mention this started happening after cura 2.6.1, you may try with that or the version before it maybe.

I am near not to having this problem using other slicers (actually slic3r gives the best result), firmware jerk controls to 4-5 help a really bit too. I still have underextrusion at the starting or ending layer where there is an hole inside the model, and this happens the most with cura too. So just to understand better this problem, reduce jerk settings and try another slicer.

Other than the problem described by an user here, I have another problem. On the outer part of the shell there is an underextrusion with the infill shape. Not only this, if there is an internal hidden hole, I will have an underextrusion with that shape too. The internal walls are fine, only the outer one is underextruded.

I have the same problem too, even if the hole is hidden inside the model.

Only 2 "wipe" settings exist: "Outer wall wipe distance" and "infill wipe distance", and they are numerical inputs. Also, I someway made the topic in the wrong section, please move it to the Cura section.

As the tital says, can you avoid the slicer to miss the sharp edges and the conjjunction points? Sharp edgs in fucsia, conjunction points in purple.

It is perfect in X-Ray view. It is how it looks printed, just like in the slicer. I found out using 0 as external wall insert lowers this effect hugely, but it is still there a bit. Using a negative value helps but it is very weird and it can be flat with the rest of the surface, but then why isn't it flat already with a 0 value? For last, why are the corners deformed?

Hi there. I noticed when slicing that there are 3 weird points on the X and Y, that are visible (and horrible) when printing. What may be the problem and a solution?

I noticed Cura does not create a "complete" shell but just a shell on the sides, so the top and bottom frames use different settings and from the top even the wall is visible and separate from the rest. Even around the Z in the image I will attach, there is a different surface 1 mm near the Z and far, which is more similar to the external wall surface. Is there any way to make the top and bottom freames uniform with the margins? They seem a separate thing, because both the roughness and the movement the printer uses the create them, as the movement is different for every wall (parallel to the longest side), while it is the same for all the surface.

I will create the tickets for sure, thank you. As I said I wanted to know which are the settings that cause the top wall patterns to be like in the top view photo, as some walls have X patterns, some vertical patterns, some horizontal patterns. And then which settings would help to solve the jagged margins and the rough roof, the little overextrusion on the walls, and the unreadable words.

Hi there. I am a new 3d printing user and own a cr-10S since 2 days ago, I tried various slicers but Cura really seems the more reliable print quality wise and because of the interface and easy of use. I actually use Ubuntu. I found some bugs (it tries to resets the settings at the first time you edit the materials, even if you do it it will ask again the next time; the dimensional settings on the left panel are cutted and not visible even if you put the curson upon them; the slicing settings words on the right are sliced and unreadable 50% of the scrolling times; the settings sub menus won't update with the right value but use a wrong one until you close the software), but with workaround it is still usable. After tinkering with the settings for 2 days I have printed my second benchy and it has been way better than the first, with only some things I am willing to solve. You can find the album with benchy images here. I will attach the profile I customized too. The problems are listed in the album, and I can't find the setting to decide the pattern of the walls. I want to be as flat as possible, so especially that X pattern is not fine. Also that vertical pattern on the left is strange as all the rest is done with horizontal lines. Thank you! PLA stock v1.2.curaprofile