Adventurehill1

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

So, I was able to calibrate my E-steps using Pronterface via USB cable connected to my computer. Unfortunately, the problem is still here. The calibration cube without blobs is from before and the one with blobs is from after changing E-steps. Other than the blobs the prints are nearly identical, with the top surface just looking nasty. Any other ideas?

So on the Kobra Max I don't actually have an option to extrude filament manually. I was wondering if changing my flow rate would accomplish the same thing, even if it's not exactly "best practice"?

I printed a calibration cube, but it shows obvious signs of underextrusion. As for calibrating the E-steps, I haven't done that because I've heard some controversial things about it. I can look into it more though.

Here are my settings. I'm pretty sure my extruder is fine, but I will definitely check it again. Thanks for the help. PrinterTortureTest.3mf

I received my new Bowden tube the other day and threw on a 3d printer test. I am still getting terrible results, including blobs, uneven walls, under extrusion in the infill, and bad bridging. I would appreciate all the help I can get

So, after a bit more testing, I discovered that my Bowden tube was melted. I ordered a new one that can withstand a little extra heat and I should soon be back in business. Thanks for the amazing troubleshooting tips.

Thanks for the quick reply. I've been doing some testing and I think the biggest problem was that i had my machine nozzle size set to 0.2mm and the nozzle I have installed is 0.4mm. i changed the setting and tried to print, but the gear on the extruder motor came loose so I have to fix that before I can test my theory. competer dragon with settings.3mf

Recently anything I try to print doesn't turn out. I've tried different plastics, changing the nozzle, changing temperature, and slowing my printer down. It still doesn't print correctly. For some reason as soon as I changed to tree support my prints started failing. I don't know if that's related or not. Printer: Anycubic Kobra Max Cura 5.4 Extruder temp: (PETG) 250, (PLA) 205 Bed temp: 70 computer dragon.3mf