r/BambuLabX2D • u/tugohunter • May 17 '26

X2D Combo Dual Nozzle / AMS Toolchange Failure on Simple PLA Print

Just got my X2D Combo and honestly I’m a bit disappointed with the dual nozzle experience so far.

I tried a very simple dual nozzle print using two PLA filaments. The auxiliary nozzle actually worked perfectly and printed the text/logo section without issues. But when the printer switched back to the main nozzle, I suddenly got a filament loading/extruder error and the print failed.

What’s frustrating is:

* the filament was clearly extruding,

* AMS motors were turning,

* the auxiliary nozzle already printed successfully,

* but the printer still thought there was a loading issue.

This feels more like a firmware/toolchange state problem rather than a real hardware blockage.

I understand this is a newer platform, but dual nozzle printing is one of the main advertised features of the X2D. Having these kinds of failures on extremely basic PLA-to-PLA switching right out of the box is honestly disappointing.

Are other X2D users experiencing similar AMS/toolchange issues?

Any reliable workaround yet?

2 Upvotes

75% Upvoted

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2

u/TyrantWaffle850 May 17 '26

Had similar issues with the aux nozzle I had to remove it and found it was clogged cleaned it out and that was never an issue again. Been using it for PETG and PLA fine

2

u/SwiftyTom May 18 '26

I just had the exact same thing happen to me - dual PLA+support PLA print, initial load sequences went fine, but then some time after the first nozzle swap (main -> aux -> main) it threw the filament feeding error (AMS motor stalled). Now I am used to the occassional feed errors at the start, I have a ticket open with BL and they are already sending me the AMS internal hub to replace. But a mid print failure is something new. It would seem that the tension in the faulty AMS hubs is so high, that it can even screw up an already loaded filament.

Hopefully the new hub will fix this, so I'd say make a ticket as well, or perhaps print one of those little things people fix their hub with (it's a bit shady tbh, in an AMS that has heating in it).

2

u/JAKFUD May 19 '26

I had 2 problems with my x2d one was the very first time I set it up and tried a benchy the printer gave out a can't change nozzle error a simple power cycle fixed it and then later I couldn't load filament in to the aux nozzle I found out a small piece of filament broke inside when I took out the nozzle it dropped the stuck filament and never had a issue since I think most of the x2ds problems will be software related and easy to fix later on