Hello, I’m having a problem with the left nozzle. It prints terribly, while the right one prints fine. I’ve tried:
Bed tramming
A spare hotend
Factory reset and calibration
Many other things
I’ve been in contact with support for a week now, but haven’t received any solutions yet.
Has anyone encountered a similar issue?
Had the same but mainly with the right nozzle (but also to some extent with the left). Found no solution even with the support.
Just a friendly note: bed tramming should always be the last resort. On the H2D and other modern printers, automatic compensation handles minor bed imperfections quite well. Manual tramming can actually make things worse if it’s not done correctly.
Also, are you using the exact same spool when switching between the left and right extruder? If not, the issue could be filament-related rather than a problem with the printer itself.
For example, I had two spools of PETG-HF in the same color on my X1 Carbon, and they behaved completely differently—one adhered perfectly while the other consistently lost adhesion and got ripped off the plate.
Yes, the same spool of filament was used.
Well, this is certainly interesting. The slicer allows you to set a different flow rate for the first layer (what it calls the “bottom” layer), but IIRC, it doesn’t distinguish between left and right nozzle. If this is a thing, maybe Bambulab will have to add that distinction.
That said, you could work around that limitation by creating a separate print profile for left vs. right nozzle.
Had a similar issue with left hot end, after loosening the transportation screw under the bed fixed my problem. If that does not help, lots of other things to try in this guide:
Have you tested with the bed to (on) and not (auto) mode?
What type of filament are you using?
What is the temperature of the nozzle?
Have you tried lowering it in 5°C increments during printing to see what happens?
I did it as stated in the bed tramming instructions
can’t say for sure, I have a much better result after tramming and it only costs like 20 australian dollars to get a usable dial indicator.
i also had to remove that 3 transportation screws. they were causing a minor bulge on my bed that somehow only affect my left nozzle (right nozzle prints fine even before adjustment).
But now i get perfect first layers from both nozzles, and i’m happy. 
Always “On”
Bambu Basic PLA
220
Not yet, gonna try this today/tommorow
Thanks for reply, already done. No change
Also watch on the lcd screen that the nozzle is dropping down from 250c after it purges to you first layer nozzle specs this has been a glitch and is very interment it will stay at 250c
Ya try a lower temperature of 5c drops to check if the left nozzle is running too hot and overheating the PLA filament.
Let set what happens then you can start changing more settings.
The temperature displayed is correct. I tried lowering the temperature, but there was no change. I will try adjusting the Z-Offset for test
Did you also do the nozzle offset with two colors ?
Ya next step is global plus z offset and first layer flow drop in 5% steps we now know left nozzle thermistor is reading in the ball park now.
I don’t know if the Bambu lab h2d will allow per nozzle z offset in start g-code with M218
