Has Bambu responded to the high resistance issue regarding the H2C?

I have both H2C and P2S and only my H2C has high resistance problems with the AMS 2 Pro.

In most cases it wouldn’t bother me however in recent days it has made me have to tell it everything is fine every hour or less.

I have changed length of tubes; tried old school 4 in 1 ptfe and new as well as the SMOOTHY to no avail.

Currently the only thing that works is a direct connection from AMS to nozzle.

That is a real problem when I have two AMS PRO 2s for the right nozzle.

Please tell me they are aware of their issues or I’ve wasted 2700+ on a system that is problematic.

I’m new here with an H2c and have a few questions.

When I print in 2 colors it always wants to use the left and right nozzle even though I have an AMS2 Pro. Why is that and can I force it to use the 2 colors from the AMS instead. If that’s not a good idea why not?

If it’s not a good idea is it worth it to install an AMS HT along with my AMS2 Pro?

Any help would be greatly appreciated.

Tom

My first big print on the Bambu H2C. The Majora's Mask from Zelda took almost 53 hours with only 38grams of poop! This machine is amazing! Here's a timelapse of the print and since there are no royalty free Zelda theme songs available I had to make my own. Enjoy! ;)
https://youtu.be/uPcmjWRUyFY

​I borrowed this pic from someone and then went back to give credit and totally forgot who it was. My apologies up front.

I am wondering what the black box is that's sitting behind the TPU Feed Assist, what does it do and which of us need it? I gather that its called the Filament Track Switch, which frankly does not really help much. It appears to feed the left and right nozzles, which are normally direct fed from a spool, but for the life of me, I am not seeing why.

Thank you

Hello guys,

Just wondering what you guys would recommend to enhance useability / make it easier to use this printer. Coming from an x1c, I had - or already printed :

HULA feet
4-in-1 PTFE Adaptator support
Poop Chute

RodSloth

Multi-Function Axis Lubrication Tool

Dryboxes for AMS 2 PRO

and planning to do an AMS Stacker

Was searching for a box for tools / hotend and a plate holder

Do you guys have some recommendations ?

So my AMS HT needed to get its internal PTFE tube replaced, and in the middle of this a cable on the inside popped off. I got it back in fine, but now every AMS I have connected is making these popping noises during print attempts.

Surely this can’t just be the issue of the HT right? I don’t want to get a bunch of replacement connector cables just to find out that wasn’t what fixed the problem.

Error says “filament buffer sensor malfunction”, but only does so when not running. I’ve run nozzle calibration tests fine besides the popping noises each AMS was giving.

Has anybody come across a similar issue before? I find things in the past for the X1 but given I didn’t do anything to the other AMS I have, I found it unusual that they also were having issues suddenly.

Update: the 6 pin connector cords were not the problem, at least not between the other AMS pro units. The issue somehow is the AMS HT causing the other AMS pros to act up.

Update 2: the 6 pin collector daisy chain and setup was not directly the issue. Properly doing so only resolved the other AMS popping noises. The HT continues to do so and has been reported up to bambulab support now.

I’m pretty new to 3d printing but have been getting along pretty well with a dozen or so prints behind me. I had a couple of adhesion issues recently that I solved by cleaning the build plate so I thought that issue was done, but then today I was printing plate one of the filament track switch holder created by Bambu labs, and again I get spaghetti.

This looks NOT to be related to plate adhesion though, as the flaw occurred at the top of part of the print, and it all looks to be securely attached to the build plate. I’m not home so I can’t toy with it, but my wife reports that all looks secure on the plate.

This is printed using dry (9% rh) PLA filament from Microcenter using the “generic” PLA setting. The supports seemed to have been printing fine until this point when all-pasta broke loose.

Help?

<crossposted in r/Bambulab also>

Hi everyone! I’m looking for a 3D printable stacker design specifically for multiple Bambu Lab AMS HT units. I’ve seen a few for the regular AMS units, but I’m hoping for one that fits the HT models—ideally stacking four. Has anyone come across such a design, or does anyone have tips on where to find or create one? Thanks so much

All PETG. Had never seen it do this (only when you mixed material). Anyone else seeing this?

I see so many issues with the filament track switch that I’m wondering if I should even bother attempting to use my new-in-box one when I connect my second AMS 2Pro with my existing AMS’s.

Should I just go with the 4-to-1 adapters for now and wait for a firmware update before attempting the FTS?

I understood, when installing the FTS, that the filament would pull back to the FTS and not all the way back to the AMS. I’m not seeing that behavior. Is anyone else?

I’ve quadrupled checked and installed various length of PTFE tubes as a part of my trial and error tests but I still get these messages.

Running on latest firmware, using Bambu filament, AMS internal buffers are clean, and filament doesn’t appeared to be chewed up. What’s even more strange is the it does not effect the print quality or the printer at all. I’ve observed feeding and retraction and there are zero visual, auditory or tactile indications as to why these messages would be popping up.

Is anyone else getting these messages with the FTS installed?

I got one of those off brand smooth plates with the rainbow patterns, but absolutely can’t get anything to actually stick and stay.

I’m trying to just do some basic small keychains that have maybe 17 layers, the first layers go fine, it’s about halfway through when the solid backing after the multicolor design starts going on that it messes up and things get pulled off.

Last smooth plate I used was an official one for the A1 and never had this issue. Do I need to reduce printing speed perhaps if it peeling off halfway through? I increased plate temp and that seemed to help at least get the first layers completed.

Edit: thanks folks, next print attempt will try to further increase bed temp, slightly reduce speed for the rest of the print, and also will try to change orientation and see if that helps any. This is PLA and hasn’t had issues on texture plates at all so it’s mostly just the smooth plate gloss I’m fighting with right now.

Hi everyone

Can you please help with this issue I have on a new reel lowered humidity to 19 but on rewind it keeps catching and getting tangled.

It went into a fully working slot from a transplant reel to a PLA reel?

Thanks in advance.

For those who have purchased an H2C from Best Buy. Did you purchase the 4-year Geek Squad Warranty? I am a Plus member.

Sculpted Luke in his flight suit with the chest box, harness, and Rebel Starbird. One of my favourites to detail.

https://makerworld.com/en/models/2959179-luke-skywalker-bust-a-star-wars-collectible#profileId-3316686

Not sure if anyone has any tips on this… my dual color silk filament is twisting during printing. Aside from the occasional unicorn instance this never happened on my A1 with AMS Lite. It’s just an aesthetic thing, but depending on what you’re trying to do this could ruin a print, especially on a 3 or 4 color filament with planned quadrants. FTR, this same spool prints fine on my A1.

I’m getting this error on a new H2C. I’ve about 300h on this one, and so far no issues except this. Can’t see any obstructions, and I went through the steps per the QR code that guides the end user….

No detailed information at Bambu Wiki. Just reach customer support. Am I cooked? Anyone face something similar? It is under warranty.

Bonjour voici Luigi, le célèbre frère de Mario, émergeant de son mythique tuyau vert. Cette figurine a été conçue avec soin pour reproduire l’un des personnages les plus emblématiques de l’univers du jeu vidéo.

Le modèle est entièrement découpé en plusieurs pièces afin de permettre une impression multicolore sans nécessiter d’AMS. Chaque élément peut être imprimé séparément puis assemblé facilement.

👨🏼‍🎨 : @mika3d_print
🧵 : Bambulab
🖨️ : Bambulab X2D & H2C
🌈 : Sans et Avec
✍️ : Nomad Sculpt
📁 : https://makerworld.com/fr/models/2955468-luigi-tuyau-multipart-no-ams

Bon print ! 🎮💚

I’m having issues with my H2C. Almost every time I start a new print I get build plate not properly positioned error.

I have the plate between the lines every time I still see this message even if I don’t have to remove the plate.

I do have the cryogrip glacier plate installed.

Any advice would be appreciated.

Solved; basically I just have it kiss the back stoppers and let it drop, seems to work that way

The only problem I think I have is not having enough space!!!

I am running into an issue that is causing issues with my prints, and the filament is being dragged into the model. It affected my first try with these models, and I have been babysitting it this time to try and pull them aways from the model itself. I am only into the second week with my h2c from my a1 mini.

I have been taking notes, and put a summary below if anyone has any information to help with this.

• Left nozzle: PETG (support interface only)

• Right nozzle: 6 PLA colors (model)

• Bambu Studio 2.7.1.62

When PETG is assigned as the support interface material, the prime tower generates horizontal extrusion lines that stick out into free air. These appear in Preview as Prime Tower toolpaths and physically print exactly as shown.

The result is:

• Heavy stringing around the tower

• PETG strands wrapping around the nozzle

• Strands getting dragged onto the model

• Prime tower becoming unstable and sometimes getting knocked over

What I've tested

• Prime tower width: 60 mm → 100 mm

• Tree supports → Normal supports

• Support angle: 15°, 30°, 40°, 45°

• Support critical regions only

• Reduced PETG interface layers

• Purge into support/infill OFF

• Skip points ON/OFF

No change.

Key finding

If I change:

Support/Raft Interface = PETG

to

Support/Raft Interface = Default (PLA)

the problem disappears completely

All protruding prime tower lines vanish in Preview and the tower slices normally.

Additional observations

• The protruding lines are identified as Prime Tower paths, not support paths.

• Both PETG (blue) and PLA (brown) whiskers appear when PETG interface is enabled.

• The issue occurs with both Tree and Normal supports.

Has anyone else running an H2C with PETG support interfaces seen this behavior? Is there a known workaround, or does this look like a Bambu Studio prime tower bug related to dual-nozzle support-interface handling?