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The Ender 3 V2 Neo is an upgraded version of the popular Ender 3 V2, featuring automatic bed leveling with CR Touch, a PC-coated spring steel build plate, and a full-metal extruder for improved print quality and ease of use. With a streamlined assembly process, quiet operation, and user-friendly interface, it’s a great choice for both beginners and experienced 3D printing enthusiasts.

My Ender 3 Max Neo Stops Extruding Filament Mid-Print

While you may be confused why I'm putting this under Ender V2 Neo, they are functionally the same device, size being the difference. Now, here's my issue, when I print the print will start off fine enough, but filament will consistently stop at about the same point each time. https://preview.redd.it/continuous-print...

More or less what happens is that the print starts off normal, and then the print simply stops at a certain point. This isn't because the filament is caught on anything, I've had this issue for a few months and taken apart a few items of the printer. I'm not sure if this is a settings issue, or if this might be an issue with the hotend, as I had to replace it, and these problems started after a few such changes.

If you have any questions you need me to clarify, I'd really like to solve this. Thanks.

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Does the extruder motor keep on running after failing? Does the temperature change a lot or does it stay constant? What kind of filament did you use? How old is the filament and how did you store it? How hot did you print? And How fast did you print it at? And how much is your retract on your extruder?

It could be a couple of problems:

-(most likely) Extruder retract too long, causing some weird kind of problem of clogging and not getting the filament up to temp for printing. Which would explain why this happens every time you reach that exact point. Exactly when your printer needs retractions.

-Poorly fabricated filament or too wet

-Heat creep from the hotend

-Hotend temperature problems (too hot or too cold / temp not constant)

-Overextruding causing a clog (I had my ender 3 V1 running up to 20% different extruder speeds because of different gears.)

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Well, the motors were still running, it's more like the filament got pulled back far enough that it wasn't working anymore. My temperature is a tad more swingy then before, but stays withing a couple degrees Fahrenheit of what I set it to during the print. I used older filament for a while, then tried some new stuff that hadn't been exposed to air. I printed it at normal speed for most prints (this happens every time) but I did try changing the speed, both to slower, and even quicker speeds. I'm not sure if I understand your final question, I don't believe I changed any setting though, my printer worked before.

Sorry if I was unclear at any point- I'm really tired rn, but basically those are the details. What are your thoughts?

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@jobcavanaugh Okay, thats a tough one. But I have a couple more questions. What kind of slicer do you use (Bambu Studio/ Cura/ Slicer/ Prusaslicer)? What Brand of filament did you try? And what was the reason for changing the hotend back then? Is it the original one or an aftermarket hotend?

Check if the Bowden tube is connected properly. Its the tube for the filament which may have been loosend during repair or just from long use. There should be little to no play on both the Extruder Motor side and the coldend side. Try pushing it in more - you might get lucky there.

Some cheaper filaments can vary in diameter, which may cause problems. If you stick with brand names, you should be fine.

There is a possibility that the filament is getting pulled back too far. Thats a setting in the Slicer. It´s called "retraction" or "extruder retraction". Should be a couple of milimeters.

Check your extruder thightnes. It should grab the filament and push it with pressure.

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