Replace 0.4 nozzle only not hot end

Bambu Lab P Series Troubleshooting
1

I have bought some replacement hot ends for my P1P and they come with two spanners and a number of nozzles. { despite what 99% of youtube says a nozzle is a small thing with a hole in it, not a big lump of heat sink adorned with wires}.

the nozzles have a hex shape exterior which fits one one spanners and the other spanner fits the hot end. Now try as I may I just can not get the two things to screw apart. Am I just being a wimp and must apply even more torque { which I don’t think my puny hads can do!) or have I missed some thing.

It would seem it’s just a screw thread but its got me beat!

Help……(please)

2

You have a picture? The hotend is one piece and doesn’t come apart.

3

Have you tried heating it up? That may help.

1 Like
4

in situ or by some external heat i.e. on thework bench ?

5

OEM hotends do come as screw in nozzles. my hot end came with 2,4,6,and 0.8 screw in inserts.

6

Did you buy them from Bambu Lab?

The reference to spanner’s suggests you didn’t.

Bambu Lab sells either a hot end or a complete hot end for the P1 series.

Hotend
https://store.bambulab.com/products/bambu-hotend-p1-series?id=41773773750332

Complete hotend
https://store.bambulab.com/products/bambu-hotend-p1-series?id=40515488448572

Each available in several sizes from 0.2mm to 0.8mm.

Third-party nozzles are fine (usually), but you need to share which you bought and from where.

7

In situ. Heat the hotend through the control panel.

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8

If the nozzles screw in, it is not a Bambu hot end.

Bambu (OEM) nozzles for the X1 and P1 series are pressed into the heat sink and are a unit. The nozzle does not unscrew, and if separated from the heat sink, the nozzle cannot be reliably re-inserted.

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9

And to add to that, In my opinion, uniting nozzle, heatbreak and heatsink in a single unit was a smart design choice by BambuLab, eliminating many shortcomings of screw-in nozzles and is one key aspect for achieving the current performance and reliability.
If you look elsewhere, E3D did a very similar thing with the Revo nozzle system. Prusa has a similar approach with the Nextruder system.
They both didn’t integrate the heatsink, but the key is integration of nozzle, heatbreak and cold side in a single unit without seams and gaps.
I think, Ultimaker was the first to integrate all critical hotend components with print cores for the Ultimaker 3.

All those companies took that step for a good reason. screw-in nozzles simply are technically inferior regarding performance and especially reliability.
If you want to go back, feel free. I have been using the same nozzle for > 1000 hours, so I really don’t feel like accepting the drawbacks to save 13 bucks for replacing a worn nozzle. I have added a 0,2mm and 0,6mm complete hotend for easy swapping, which really vanishes in cost compared to the other consumables.

When nozzles were made from pure brass, swapping was a regular maintenance operation. With more resistant materials, this just isn’t necessary very often anymore.