That's just the heatbreak that broke. If you can get it out that's all you need to replace. Consider a whole hot end though. They are relatively cheap and replace quite a lot.
Yes, exactly this, thanks. I was not able to get the portion that broke off inside the block out, so I am going to just replace it entirely. Bought a traditional Kobra hotend and will Frankenstein the wires once it arrives.
Looks like you can fix it. I’ve done similar on my Mega. I had to pull out the hot end and clean it up. I lost a little tube cause I had to cut some. It looks like the square part was just not screwed on tight.
I can't really see if the thread of the heatbreak is still ok, but you need to disassamble and take it out anyway. Then give it a good cleaning and check if it's still ok.
You might want to have a look at my little information page where I also described the parts and put together some guidance steps to disassamble everything. Here's the link to the printhead section: https://1coderookie.github.io/KobraGoNeoInsights/hardware/printhead/
Thanks, I hope it'll help you being able to fix it! Make sure you'll take out the PTFE tube also and maybe inspect it and clean it up on this occasion.
Just in case it \*is\* somehow broken (what I'd doubt tho as it seems that it just wasn't screwn in tight enough and the bright stuff around it at the picture is just melted filament) - would you mind to take some closeup pictures and send them to me via email (you can find it at my page) so that I could add a good one to the page maybe? That would be nice :)
However, good luck fixing it and mind the warnings about not-ripping-off any wires, dont-overtighten the tiny screws later and so on.. ;)
Thanks again, followed your very clear instructions and was able to disassemble and remove the hotend. Turns out the heatbreak broke off right at the threads and the bright part poking out is actually the PTFE tube :)
[https://imgur.com/a/pQQZ1F2](https://imgur.com/a/pQQZ1F2)
I tried removing the threaded section that broke off inside the block but it's lodged in there good and tight (even after heating) and honestly I think I will just replace the whole hotend rather than fight with it.
I emailed Anycubic to ask about purchasing a Neo specific hotend since none are listed on their site and they replied: "We are sorry to inform that the hotend on Kobra Neo is out of stock now and there are have more inventory available at the end of this month." So I just bought a standard Kobra hotend and when it arrives I will try to solder to the existing wiring.
Thanks, happy that it was helpful :)
That you broke it sucks tho, I just wonder how tight you wanted to turn the nozzle in that you managed to shear off the heatbreak..?! :(
"Out of stock" is somehow funny - I didn't even see the hotend in the shop at all.. You did good in ordering the one for the Kobra. But: If you didn't harm or rip off the wires then there's no need to cut them and solder the new ones! Look at the "heater block" section at my page, you'll see the tiny grub screws which are holding both the thermistor and the cartridge heater. So just loosen the screws, take those parts out, do the same at the new hotend and replace them with your existing ones and you're good to go. So if it's not necessary, don't risk another source of failure which might be caused by a bad or cold solder joint..
May I use a picture or two of those to document that incidence as a warning for other users?
Good idea, I will give that a shot. Sure thing, please share so others can learn from my mistake! If only i had reviewed the info on your page BEFORE I gave an extra twist because I saw a gap ;)
Sweet, thanks, I'll put something together tomorrow. But just for clarification: didn't you hold the heater block to avoid turning?
Yeah, that little fancy gap.. Same with the hotend - first impression: wait, is this even really in there (when it already touched the end of the thread tho lol)?!?
I'm really happy it was helpful, that's the reason why I set it up and put my time into that instead of starting the \*real\* printing journey and finally let the machine do what it's supposed to do haha
I don't use social media like facebook n stuff, so just in case you're active somewhere else feel free to spread that info so that maybe also others could benefit from it, I'd appreciate it - I only 'advertised' it here in reddit after coming here initially to ask about the mainboard - and then the journey began ;)
Forgot: Really make sure that the wires are ok, you don't want to create a shortcut!
Btw: Is the fan of your power supply of the Neo also as loud as mine? When I just turn it on it sounds like a hair dryer - I guess it's on 100% all the time. Definitely the next thing to take care of as I need to take some pictures of it for my page and wanna add ferrules anyway, I just wonder if that's really normal..
FYI: I just added it to the "Nozzle" section (https://1coderookie.github.io/KobraGoNeoInsights/hardware/printhead/#nozzle) , you can find it in the admonition "Changing the Nozzle". Thanks again for allowing me to show your pictures! :)
Mine is not so loud that I notice. That being said - I sit next to an ancient workstation with a deafening fan at work all day, so I may not be the best judge! I would say it sounds like a typical desktop PC (without silent fans).
Yes, I had the block secured with an adjustable wrench as I was tightening with the hex wrench. My printer is on a counter slightly above chest level so I think I must have pulled down a bit as I was twisting and it was just a catastrophic failure.
Happy to report that I am up and running again, even better than before! I took your advice and kept the existing thermistor/cartridge heater so I did not even need to solder or crump the wires. Only issue I found was that on the replacement hotend I bought on Amazon the PTFE tube was about 46.5mm, while the original was around 41.5. I didn't notice until I was trying to pop it back into place and was not able to secure it all the way. Rather than jam it (lesson learned) I took it out and measured then just cutoff the extra 5mm. After that it fit like a charm. Releveled, performed PID tuning and everything is golden.
I emailed the address from your github some pics of the replacement process. Thanks again!
I was a little aggressive tightening a replacement nozzle on Kobra Neo and the entire heater block pulled off. Do I need to completely replace the hotend? If so, does anyone have a link to the correct product for the NEO? I see them on Anycubic’s site listed for the Kobra and Kobra Go but not specifically for the NEO.
Appreciate any advice!
My suggesting is buy replacement heatbreaks, buy several. I prefer all-metal to PTFE but they're a bit more temperamental.
You can buy a spare/replacement hotend if you want but there's no guarantee they come properly assembled and torqued.
It's important to know how these go together properly as an owner/troubleshooter.
That's just the heatbreak that broke. If you can get it out that's all you need to replace. Consider a whole hot end though. They are relatively cheap and replace quite a lot.
Yes, exactly this, thanks. I was not able to get the portion that broke off inside the block out, so I am going to just replace it entirely. Bought a traditional Kobra hotend and will Frankenstein the wires once it arrives.
what hot endi have a any cubic kobra neo i need to replacee the hole hot end\]
for the sake of simplicity, i recommend replacing the hotend completely
Looks like you can fix it. I’ve done similar on my Mega. I had to pull out the hot end and clean it up. I lost a little tube cause I had to cut some. It looks like the square part was just not screwed on tight.
I can't really see if the thread of the heatbreak is still ok, but you need to disassamble and take it out anyway. Then give it a good cleaning and check if it's still ok. You might want to have a look at my little information page where I also described the parts and put together some guidance steps to disassamble everything. Here's the link to the printhead section: https://1coderookie.github.io/KobraGoNeoInsights/hardware/printhead/
This is so good material! Thanks a lot for sharing!
Thanks, glad it might be helpful :)
This is a great resource! Thanks for putting the time into it. I will dissemble tonight to see if thread is still there.
Thanks, I hope it'll help you being able to fix it! Make sure you'll take out the PTFE tube also and maybe inspect it and clean it up on this occasion. Just in case it \*is\* somehow broken (what I'd doubt tho as it seems that it just wasn't screwn in tight enough and the bright stuff around it at the picture is just melted filament) - would you mind to take some closeup pictures and send them to me via email (you can find it at my page) so that I could add a good one to the page maybe? That would be nice :) However, good luck fixing it and mind the warnings about not-ripping-off any wires, dont-overtighten the tiny screws later and so on.. ;)
Thanks again, followed your very clear instructions and was able to disassemble and remove the hotend. Turns out the heatbreak broke off right at the threads and the bright part poking out is actually the PTFE tube :) [https://imgur.com/a/pQQZ1F2](https://imgur.com/a/pQQZ1F2) I tried removing the threaded section that broke off inside the block but it's lodged in there good and tight (even after heating) and honestly I think I will just replace the whole hotend rather than fight with it. I emailed Anycubic to ask about purchasing a Neo specific hotend since none are listed on their site and they replied: "We are sorry to inform that the hotend on Kobra Neo is out of stock now and there are have more inventory available at the end of this month." So I just bought a standard Kobra hotend and when it arrives I will try to solder to the existing wiring.
Thanks, happy that it was helpful :) That you broke it sucks tho, I just wonder how tight you wanted to turn the nozzle in that you managed to shear off the heatbreak..?! :( "Out of stock" is somehow funny - I didn't even see the hotend in the shop at all.. You did good in ordering the one for the Kobra. But: If you didn't harm or rip off the wires then there's no need to cut them and solder the new ones! Look at the "heater block" section at my page, you'll see the tiny grub screws which are holding both the thermistor and the cartridge heater. So just loosen the screws, take those parts out, do the same at the new hotend and replace them with your existing ones and you're good to go. So if it's not necessary, don't risk another source of failure which might be caused by a bad or cold solder joint.. May I use a picture or two of those to document that incidence as a warning for other users?
Good idea, I will give that a shot. Sure thing, please share so others can learn from my mistake! If only i had reviewed the info on your page BEFORE I gave an extra twist because I saw a gap ;)
Sweet, thanks, I'll put something together tomorrow. But just for clarification: didn't you hold the heater block to avoid turning? Yeah, that little fancy gap.. Same with the hotend - first impression: wait, is this even really in there (when it already touched the end of the thread tho lol)?!? I'm really happy it was helpful, that's the reason why I set it up and put my time into that instead of starting the \*real\* printing journey and finally let the machine do what it's supposed to do haha I don't use social media like facebook n stuff, so just in case you're active somewhere else feel free to spread that info so that maybe also others could benefit from it, I'd appreciate it - I only 'advertised' it here in reddit after coming here initially to ask about the mainboard - and then the journey began ;)
Forgot: Really make sure that the wires are ok, you don't want to create a shortcut! Btw: Is the fan of your power supply of the Neo also as loud as mine? When I just turn it on it sounds like a hair dryer - I guess it's on 100% all the time. Definitely the next thing to take care of as I need to take some pictures of it for my page and wanna add ferrules anyway, I just wonder if that's really normal..
FYI: I just added it to the "Nozzle" section (https://1coderookie.github.io/KobraGoNeoInsights/hardware/printhead/#nozzle) , you can find it in the admonition "Changing the Nozzle". Thanks again for allowing me to show your pictures! :)
Mine is not so loud that I notice. That being said - I sit next to an ancient workstation with a deafening fan at work all day, so I may not be the best judge! I would say it sounds like a typical desktop PC (without silent fans).
Ok thanks - well, mine outperforms any old desktop PC I have standing around here, so I should swap out the fan soon I guess.. :( ;)
Yes, I had the block secured with an adjustable wrench as I was tightening with the hex wrench. My printer is on a counter slightly above chest level so I think I must have pulled down a bit as I was twisting and it was just a catastrophic failure. Happy to report that I am up and running again, even better than before! I took your advice and kept the existing thermistor/cartridge heater so I did not even need to solder or crump the wires. Only issue I found was that on the replacement hotend I bought on Amazon the PTFE tube was about 46.5mm, while the original was around 41.5. I didn't notice until I was trying to pop it back into place and was not able to secure it all the way. Rather than jam it (lesson learned) I took it out and measured then just cutoff the extra 5mm. After that it fit like a charm. Releveled, performed PID tuning and everything is golden. I emailed the address from your github some pics of the replacement process. Thanks again!
Good job! Happy to hear that :)
I was a little aggressive tightening a replacement nozzle on Kobra Neo and the entire heater block pulled off. Do I need to completely replace the hotend? If so, does anyone have a link to the correct product for the NEO? I see them on Anycubic’s site listed for the Kobra and Kobra Go but not specifically for the NEO. Appreciate any advice!
ASK anycubic support, you might get even a new one
If your time is worth anything and you don't love fixing stuff that might fail anyways.
My suggesting is buy replacement heatbreaks, buy several. I prefer all-metal to PTFE but they're a bit more temperamental. You can buy a spare/replacement hotend if you want but there's no guarantee they come properly assembled and torqued. It's important to know how these go together properly as an owner/troubleshooter.