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Nozzle tube fused to the Nextruder heat break  

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Christopher Tjalsma
(@christopher-tjalsma)
Member
Nozzle tube fused to the Nextruder heat break

I'm trying to change the nozzle on one of the tools. I unscrewed the set screw but it seems like the tube is fused to the heat break. I've tried heating the tube red hot with a torch, but it won't budge. I'm afraid of forcing it because the heat break seems rather fragile. Any ideas?

Posted : 28/07/2025 4:26 pm
Diem
 Diem
(@diem)
Illustrious Member

I had this problem.  I can't be sure but I think I must have overtightened the grub screw on a previous change and so distorted the tube ...

I bought a new heatsink and hotend; the nextruder rebuild isn't too difficult but you MUST first print out the PG-assembly-adapter.  There are plenty of guides to the nextruder build process 'though mainly for the MK4 - it's the same part just turned around in the XL and Core One so the process is the same.

Afterwards I was able to extract the nozzle with a puller leaving me with a spare, apparently undamaged heatsink and a spare 'though scratched heaterblock.

You might try the disassembly so you can set up a puller on the heatsink and perhaps save the replacement costs but I don't advise pulling whilst mounted.

Cheerio,

Posted : 29/07/2025 4:23 am
Christopher Tjalsma
(@christopher-tjalsma)
Member
Topic starter answered:
RE: Nozzle tube fused to the Nextruder heat break

Thank you! We finally got it out, luckily before ordering a new heatsink ($47).  I'll download that PG-assembly-adapter now!

Posted : 29/07/2025 12:06 pm
Christopher Tjalsma
(@christopher-tjalsma)
Member
Topic starter answered:
RE: Nozzle tube fused to the Nextruder heat break

I can't find the link to the PG Assembly Adapter. Weird, it's a common tool!

Posted : 29/07/2025 12:13 pm
Diem
 Diem
(@diem)
Illustrious Member

https://www.printables.com/model/449554-xl-printable-parts/files

Listed under 'Parts for maintenance'

Cheerio.

Posted : 30/07/2025 9:12 am
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