GregValiant 1,342
The numbers in the gcode say extrusion is at 100% flow (if you're Mr. Spock it's 99.9882%)
My hot end is a single so it's straight through. I found a piece of wire that is 1.75mm and (with the bowden and nozzle out) I push it through the warmed up hot end. It usually gets something out. In your case I don't know how you would handle the merge area. I suppose a smaller piece of wire would work. Maybe something like a broken guitar string.
I have a simple system for cleaning nozzles. I hold it with a piece of pliers and put a propane torch to it. When the flaming drips stop I drop it into a glass of water and then clean out the inside better with a watchmaker screwdriver and the cleaning needle that came with the printer. Looking back - I don't think I've ever had a true "plugged nozzle". It was always a plug that formed at the bottom of the bowden tube. Printing a lot of PETG will eventually hurt even a Capricorn tube.
The grinding of the filament is a definite problem. Are you confident that the extruder tension arm is adjusted tight enough? Usually when things get bad and the filament won't push then the extruder skips steps. If it is turning and not pushing then maybe it's just not gripping the filament tight enough.
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GregValiant 1,342
The gcode file you posted is different than the one in your photos.
That photo of a print looks like there is an extruder problem. What printer is that?
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GregValiant 1,342
I found it. Geeetech A20M.
To the right of the Settings Search box is an icon with three lines on it. Click on it and set the visibility to "All". In the Material Settings check all the flow% numbers.
It looks like the skirt is going down at exactly 90% flow. That doesn't account for all the banding though. It looks more like the extruder is stopping and starting or some other problem that is causing intermittent extrusion.
Use the "File | Save Project" command and Cura will save a 3mf file with all your settings and the model. Post that file here.
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BPQ1991 0
@GregValiant Thank you so much for your quick response!!!! Sorry for the wrong gcode, I've attached the correct one. I also think I may have found the root of the evil. I'm running a test as I post this to validate. Sooo, you mentioned it is leaning towards being an extruder issue. I had my 1.5KG spool of PETG in a filament dryer and I think that may have been putting a little drag on the filament. I took it out of the PTFE tube and looked at it and i noticed some morse code (dots where the extruder pushed the filament through and dashes where the filament was slipping in the extruder gear teeth), I put the filament spool on the stock spool holder and am now running a test with the same gcode on the octaprint server. I've attached the files in question.
So .. tension on the extruder wasn't it. Still printing like crap. I am going to disassemble the hot end, put new PTFE tubing in, and also take the extruder apart and clean it as well. I may also change nozzles. I noticed quite a bit of filament dust on the gear. Any tips on the best way to clean the hot end?
I've printed a bunch of layers now and it is spotty at best. I am going to abort the print because it is a mount for an xbox and the last thing I want is for it to be weak =D.
Again, THANK YOU so much for your help =D You have no idea how much I appreciate it.
GA_xshelf_shelf_final.gcode GA_xshelf_shelf_final.3mf
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