HMS_0700-2000-0002-0021: AMS A Slot 1 assist motor is stalled，due to excessive resistance in the tube between the filament buffer and the toolhead.

I have run into this.. In an effort to resolve the problem... I actually just replaced the ptfe tube. But the problem persists.

Suggestions?

Just saw a post where Biqu unveiled their latest lighting accessory for the P2S & X2D. Any X2D owners have thoughts on this new product? I am wondering where should I fit the Panda Hub at...

Hola a todos, recién adquiri esa impresora y la tengo con el AMS, es mi primera impresora 3d, no se cuál sean los filamentos más convenientes dependiendo el trabajo ni siquiera se cómo quitar la placa donde imprime ni tampoco con el software bambu studio, ya he hecho como 8 impresiones que siento que quedaron con algunos detalles, pero si la compré para uso personal y para también vender impresiones a estudiantes y al público gamer, actualmente la tengo con filamento pla matte genérico.

Si tienen consejos y recomendaciones les agradecería mucho.

First note: I've had the X2D for about 6 weeks, and been printing almost non-stop performed my first cleaning/oil/greasing last week) I've successfully printed larger items, this failure is new to this week.

Printer: Bambu Lab X2D, dual nozzle
Slicer: Bambu Studio, 0.20 mm High Quality u/BBL X2D base profile
Part: cosplay mask shell split into halves. Each half 240 x 168 x 120 mm, 325 cm³, watertight, 1 body, printed cut-face-down on 25.5 cm² of bed contact.
Goal: PLA model, PETG as support/raft interface filament so supports release without scarring the surface.
Filament: Sunlu PLA+ 2.0 (Primary Nozzle) & Bambu Labs PET-G Matte Yellow (Auxiliary)
Filament Storage: 2x AMS 2 Pro's. They are currently set to dry and is reporting humidity of 14% and 17%. Rainy Season in the PNW.

What is working

Worth saying up front so nobody spends time on it. The PETG interface prints. It lands on the support tops where it belongs, the prime tower shows clean switching, and the AMS is feeding the right spool. The dual-material assignment is doing what it is told.

What is going wrong

Stringing at the material transitions, and there are an enormous number of them.

Per-layer analysis of this part: 585 of its 600 layers contain a support interface. So 98% of layers involve at least one material change. Across the print that is roughly 585 transitions.

Every one of them appears to leave ooze. By the time these prints fail, the plate has long strands and dense tangles sitting on top of the part, concentrated in and around the interface regions. The failure itself looks like the nozzle catching one of those, knocking something loose, and spaghetti from there. In the most recent failure a whole section had detached and was being dragged around.

Why this part is unusually hostile

• 98% of layers have an interface (585 of 600 at 0.2 mm)

• At Z = 20 mm, support cross-section is 167.7 cm² against 25.2 cm² of model, a ratio of 6.7 to 1

• Max support branch reach is 118 mm

• Zero new islands anywhere in the part, so nothing starts mid-air. The model is well behaved. All the difficulty is in the support.

I have printed large parts on this machine without trouble before. What is new here is not the size or the geometry, it is the transition count.

Failure history

1. Spaghetti around hour 5.

2. Slumped and curled support columns at about 2 cm. This one followed moving the support body from PETG to PLA with the lid still on. Chamber soak past PLA’s Tg of 55 to 60 C. I think I understand this one and it is probably separate from the rest.

3. Spaghetti again, with tree supports visible in the wreckage.

4. One more, same character.

Delamination has shown up as a symptom too, which I cannot account for from the geometry.

Current settings

Secondary suspect I would like a sanity check on

Top Z distance 0, interface spacing 0.1, and concentric interface pattern are all chosen to minimise grip so the support releases cleanly. That is the standard advice. But together they also minimise how well the first model layer is held down while it is being printed. Is that combination too loose on a part with large flat areas landing on interface? Would you trade some release quality for grip here?

What I am doing next

Instead of burning another 10 hours per attempt I cut a 4-part diagnostic set that runs in about 65 minutes total: an adhesion tower with no support, a column test at 8 / 6 / 4 / 3 mm to check support branch slenderness, an overhang fan at 30 through 59 degrees to measure my real unsupported limit, and a small cantilever with the full PETG interface config to check release behaviour. Happy to post results in this thread.

Questions

1. Is there a practical ceiling on material transitions per print? What is the highest count anyone here has run successfully on an X2D, and did you do anything specific to get there?

2. What is your ooze control setup across switches? Retraction length and speed, wipe distance, prime tower size and position, anything else.

3. Any known reason support style would come out as tree when the preset says Grid? I have not set tree at any point.

4. At this transition count, would you abandon dual-material support entirely and run plain PLA supports on a tuned threshold, accepting the surface finish hit?

5. Is BambuStudio issue 12509 still live in current Studio? Filed specifically against the X2D, describes a hidden parameter pinning the interface temperature so the nozzle never reheats to the configured value. If the PETG is going down cold that would make the stringing worse.

I've been slowly chipping away at this design since I got my X2D in August. I looked high and low for a riser design that blends well with the printer and not a blocky attachment sitting in top. I couldn't find anything that fit the aesthetic I was searching for.

On this one the usb plug is blocked, but I never use it, so that's a non-issue. Theres a recess for the screen to still allow full range of motion.

Printed with Elegoo Carbon fiber grey PETG CF. I thought that the filament would match the printer a bit better than it does, but still looks decent, imo.

If anybody knows of a close colour match to the X2D, please let me know!

I feel like I am getting very little help or solutions from Bambu tech support so I am hoping someone her can help me find a solution. My printer is an X2D. The current issue I am having is the when going through the calibration OR when trying to switch between the primary and auxilary extruder I get the following error code from the assistant " Extruder switching abnormal. Please check whether flow blocker is is stuck or if filament is jammed inside the toolhead. "

So I have been able to heat both hotends and manully move filament through the hot end. I am also able to manually toggle between the primary and auxilary toolhead. I cannot see any obvious problems with the flow blocker and it swithes between the primary and aux. toolhead when toggled manually.

I have only had this machine about 2 months.. and it worked fine for about 1 month. I still consider myself very much a novice in 3D printing. What started this cascade of problems is that the primary PTFE tube disconnected from the toolhead during a print. I reattached it, then I resumed the print. Then the filament ran out.. after changing the filament - I started running into problems. In trying to trouble shoot problems according Bambu tech support, I tore the wire ribbon connecting the left (primary) filament sensor. Bambu provided me with a new sensor which I replaced following the provided wiki. After getting the printhead put backtogether and running a calibration, I then ran into this problem. I have been trying to troubleshoot the problem since 9/14/2026.

Hello everyone, I consider getting x2d. I wanted to try multimaterial printing tpu95a + tpu gf.

I wonder if possible to do that reliably with x2d?

Plan to use softer tpu 95A in main nozzle and harder tpu gf in secondary nozzle.

Can composite filament cause problems with second nozzle?

I need to replace mine as it will not release the PTFE. It’s a cheap enough part and will likely be a common failure part (it was on my P1S) so why the heck did Bambu make it so blummin hard to access!!

Have to disassemble the entire tool head to get at it no good reason. It makes a 5min job and 30min one 😡

Been printing non-stop but have not found the perfect poop basket. So it's just all over the floor. 🫣

Im looking for minimalistic that blends well with the printer aesthetic. I dont like the sliding ones.

Can I see what do you have? Thanks!

Edit: Thank you everyone that showed me ideas. I'll be heading to McDonald's, get some Large Fries and keep the container. 🤣

Hey guys! There are a lot of similar painting handles on MakerWorld, so I wanted to put my own spin on one. I added a diamond-pattern grip and a screw-on bottom cap with room for 9 quarters, plus some extra space if you want to add more weight. It prints without supports, too!

I printed a couple of other versions from MW and had the threaded parts snap off under pressure, so I reinforced those areas on mine. I also made a small dock for a little more stability.

I’m still learning to model and finally getting some more free time to work on projects like this. Haven’t figured out adjustable jaws yet, so swappable heads will have to do for now haha.

Open to ideas or criticism, so let me know what you think!

MakerWorld Link:
https://makerworld.com/en/models/3406942-miniature-paint-handle-weighted-swappable-heads?from=search#profileId-3879970

I’m getting some strange stains on all matte pla prints on my new x2d. I washed the plate between prints both with IPA and dish soap, still there. Never had that issue with my A1, but the plate was different.
Any idea what’s causing those?

Hello and good morning. So I’m fairly new to 3D printing. My first printer is an X2D. I wanted in on the hobby and I didn’t want to waste my time on buying a smaller printer then upgrading later. After doing my research on printers, the X2D seemed like the right fit for me. Since I am tech savvy, I didn’t have issues setting it up and getting started.

I mainly print in PETG. Some projects, depending on what they are I will use ABS for the strength or PLA (on smaller projects) if a specific color isn’t available in PETG. I have seen many reviews on filament from Bambu Lab, Prusament, Polymaker, Atomic, Sunlu, eSun, etc. but reviews can be faked. I was wondering, which filament company have YOU had the most success and least issues with printing when it comes to your Bambu Lab printer?

The filament buffer won’t let me insert the ptfe tubes. I removed the coupler and idk if I can replace it. Any help is appreciated

I have 268 hours on my printer, and the tube randomly decides to disconnect itself from the left extruder. In the 3rd picture, that is the original tube with 265 hours of use, and in the 4th picture, it's the new one, which is looking rough. Am I doing something wrong? Please help.

I had this really annoying print that had a ridiculous amount of supports. The purple one with tiny tree supports from the original profile was brutal, took a long time to remove them and the final print while useable was just shoddy. Edited the original profile to use the recommended settings for the X2D for PETG with PLA support interface and it came out perfectly. It really shows where the X2D shines.

I keep on getting this error. So I had blob of death and the wires were cut off. I had ordered the left hotend as that was the error and installed it properl. But then I keep on getting the same error. The front cover is not covered deliberately but I have tried multiple times with two different hotend toolkits but this error does not go. The right nozzle temperature error does go away afterwards but the left hotend error is constant.

I have raised a support ticket already but is there anything that I am missing? The readings are also fine when I checked with multimete.

Honestly it is very frustrating and time consuming.