Adventurehill1

I decided to run a print with almost stock TPU settings, just as an interesting test. It actually worked like a dream! Thank you guys for your help, it was extremely useful. Good PETG CalibrationCube.3mf

I ran a quick print with those settings and support turned on. It definitely improved the stringing problem, but didn't solve it completely. I'm curious what setting you tweaked?

Ok I just realized I used the stock TPU setting accidentally instead of your tweaks. I'm shocked that it even melted enough to do anything at 210 degrees. I'll print one with your settings.

My dryer gets to about 110F, which does seem cold to me. I didn't unspool any filament and I left it in for 8 hours.

I tried those setting sitting flat (Z straight up) and it worked beautifully. I do need a smaller layer height if I can possibly get it though.

Here is another print I did. I plated two cubes, one with supports and one without, similar to how they are placed in the picture. The plastic is stringing, but only from the strange layer on the outside. I did a print without supports and it did the same thing. I also double checked the nozzle setting and, yes, it is a 0.4. As for feed rate settings, I assume you are asking about E steps? I have calibrated those. I just got Cura 5.7.0 yesterday, I will switch. Hopefully that's helpful.

I have a filament dryer, which I used then printed again. The results are, well, exactly like before. the last two cubes have been printed with the settings I attached. I'm really not sure what else it could be. I will print again with line width and flow same for infill and support and see what happens. StrangeCalibrationCube.3mf

It's not underextrusion. (Sorry for not explaining better) It's more like a flaky surface layer that can be peeled off (Maybe overextrusion?) My infill has been having issues with just "bunching up" at the intersections, so I have everything set higher to help it stick where the extruder puts it. Also, I believe my hotend runs hotter than displayed by a good bit, which seems to be a Kobra problem. I've printed everything between 220 and 250 and for me 225 is the sweet spot. There is a stock profile for the Kobra, but it's pretty bad. I added it to the reply so you can take a look. StockCalibrationCube.3mf

Here is the result with a brand new nozzle. The strange stuff on the outside of the print can be removed by hand without leaving too much scarring, but I would still like to know what's happening.

Unfortunately the new layer height and line width settings still make a model that looks like it was 3d printed by hand. I am wondering if it is my nozzle, so I will change it for the next print.

Have you set the print area size to match your printer?

I've been trying to debug this sloppy mess my printer call finished prints for a while now. So far for PETG I've tried changing temperature, print speed, retraction settings, and cooling, as well as some other minor changes. It all looks about the same. I'm no expert, but I think the Z axis on my machine (Anycubic Kobra Max) is pretty decent, it has dual z motors and everything. I don't really want to change layer height more than I have to, since I need a smooth surface, but I can switch to a 0.2 mm nozzle.

I need a smoother surface on my print than a 0.2 height and 0.42 line width will give me. It's an aerodynamic part, and it needs to look good as well.

I'm using a 0.4. I was led to believe that a layer height of 0.08 was possible, so I thought I was being conservative. What is the smallest layer height you would recommend? I can switch to a 0.2 nozzle of it's not small enough. Yes.

Also, the settings on this profile produce some pretty disastrous results...

Cura is filling in the top corners of the X in this calibration cube. Is that a setting I can change? Help with CalibrationCube.3mf

Do you think I'd be ok to set the z distance to 0.2? The lack of a support roof seems to have cured my problem, but the support is difficult to remove.

I am having issues with Cura generating supports where I don't want them on this model. You can see the support going up the side. I'm wondering if this is a Cura problem or a model problem. CalibrationCubeSupport.3mf

Thanks. I have a filament dryer, but maybe I let the filament sit out for too long between drying. I'll try it.

I get the same problem, but only with tree supports.

I printed a simple calibration cube, rotated 45 degrees to test supports, and something very strange happened. I used the settings you recommended as well. You can see in the pictures that the top printed fine, but everywhere that I had support it seemed to under extrude and string. This almost seems like a slicer/gcode error?

Printer: Anycubic Kobra Max with Capricorn Teflon Tubing Slicer: Cura 5.6.0 Filament: Overture PETG I have been having problems with blobs and stringing for a good bit now, I think it has to do with my retraction settings, but I'm not sure what to tweak. For some reason I am also getting a lot of plastic buildup on my hotend and nozzle. Any help would be greatly appreciated. PETG SupportCalibrationCube.3mf

These settings have worked wonders for my walls, thanks a lot. Unfortunately, the infill is still struggling. The infill and my nozzle seem to be in a war, since I can hear the nozzle hitting infill sections and it gets a lot of buildup on it. this was printed at 225 degrees on the extruder and 30% infill with PETG.

The settings you provided seem to work better, the only thing is I seem to have some warts in the top layer where it had to bridge between infill lines. I guess that could be warping due to the fan being on? I used PETG.

Here is the file. This was printed with PETG, with PLA the only thing I do is lower the temp a bit. CalibrationCube.3mf