Am I correct in my thinking that to have a heated 4 slot RFID reading AMS unit running along with my 2 standard AMS units I need to buy an AMS 2 and an AMS 2 Pro Hub Upgrade kit?
I already have the AMS Hub for my two standard AMS units but it isn’t really apparent if the Hub in the Pro Hub Upgrade and my existing hub are the same device. I read the two bullets below as the AMS 2 will act as just another AMS until the drying firmware is rolled out. Currently predicted to be late April but like anything, subject to slide.
The AMS 2 Pro is compatible with X1/P1 series printers for multi-material printing.
The filament drying feature for these older generation machines will be fulfilled through an OTA update by the end of April
Lastly, as far as drying, the AMS 2 only goes to 65C while some filament specs list higher temps for drying. Can you substitute a longer drying time for a lower drying temperature.
I have a SUNLU S4 and am wondering if you do an initial drying in the SUNLU then transfer it to the AMS 2, it should keep the filament dry I believe
Yes there is no “AMS Pro Hub” it is the same AMS Hub you already have in the “AMS 2 Pro Hub Upgrade Kit”; the only thing you wouldn’t have from that is the dedicated power supply for the AMS 2 Pro; which you only need if you have multiple AMS 2 Pro which you want to do drying in at the same time (due to the limitation of how much power draw is supported via the 4pin bus cable).
I’d personally recommend getting a power supply for each AMS 2 Pro you intend to get if you are getting more than 1 AMS 2 Pro; and it wouldn’t hurt to just plan on using a power supply for the AMS 2 Pro regardless.
MalcTheOracle: The AMS 2 does require a power adapter, but, there is no separate product listing for this.
The AMS 2 Pro does not require a dedicated power adapter unless you intend to use the drying function in more than 1 of them at a time. Secondly they do have a product listing for the dedicated power supply
I can’t post links but on the bambu store the URL for the product page is /products/ams-2-pro-switching-adapter
Wsquared58: Lastly, as far as drying, the AMS 2 only goes to 65C while some filament specs list higher temps for drying. Can you substitute a longer drying time for a lower drying temperature. I have a SUNLU S4 and am wondering if you do an initial drying in the SUNLU then transfer it to the AMS 2, it should keep the filament dry I believe
That is the intention of the AMS HT; which is intended to be used for those high temperature filaments. If you are using Bambu filaments then the drying temperature and duration will be automatically set for the filament type(s) in the AMS. Regarding using the S4 to dry the filament first, there wouldn’t really be much difference in doing that and just using an original AMS at that point. The AMS 2 Pro isn’t doing “continuous” drying; and you are instructed to remove the filament from the inlet and hook it on the spool for the drying since it rotates the spool during the drying process to more evenly dry the filament.
Considering the S4 has a max of 70°C vs 65°C of the AMS 2 Pro there is not much of a reason to use it in lieu of just doing the drying in the AMS 2 Pro. If you have filament that will dry more optimally at a higher temperature then I’d just get one or more AMS HT for those filaments; as it supports up to 85°C. I also have an S4 and plan to just continue using it to dry the filament that I’m using in my original AMS units but I’ll eventually probably sell those AMS units and upgrade them to AMS 2 Pro and then I’ll just use the S4 to pre-dry some filaments that I’m not normally using in my AMS units.
Some of my drying questions in regards to the AMS 2 is somewhat of an assumption on my part. That assumption could be wrong. I say that right up front.
So, you buy your AMS 2 and a spool of PA-CF which you put in the AMS 2. New spool detected, same as old school AMS but AMS 2 either goes directly into PA-CF Dry New Spool Mode or asks if you want to do that. In either scenario you go for the drying process. Here is where things get tricky and are left unsaid.
The AMS HT advertises that the way it dries/dehydrates is by using a special vent that is to me sort of like a check valve, it lets wet air out but is configured/designed so air can not flow into the AMS HT. The AMS HT also touts a pretty long duration that it will maintain that level of dryness. due to being air tight which is quite a claim in itself.
The AMS 2 text says it has the same vent valve assembly as the AMS HT.
Electro-Magnetic Air Vent for Fast filament drying & air-tight filament storage
This gets to the crux of my questions and it would be nice if BL would fill in these blanks.
AMS 2 is chomping at the bit to be used.
I load my PA-CF in slot 1 on Day Zero and launch it into the full up drying routine.
Day 7 I load a new spool of PETG in slot 2 and initiate a full tilt boogie drying cycle. * What are the impacts to my PA-CF in slot 1?
Day 12 I load a spool of ABS in slot 3 and a spool of PC in slot 4.
What are the impacts to the previously dried spools?
Once you have 4 spools, all of which have been dried to whatever BL has programmed into the AMS 2 configuration and you are in this air-tight, hold the fort mode, does the AMS convert to some sort of %RH Mode or maybe a mode where AMS 2 keeps itself under a slightly positive pressure with air it has dried? Maybe (in theory) you can keep your filaments dry and ready to print indefinitely.
I see the AMS HT as a tool for regular TPU (for me). I was entirely disappointed in TPU for AMS and will not buy another spool of that stuff. Filament clickbait.
On the Bambu Lab AMS 2 Pro - Automatic Material System page, if you scroll down it confirms that but A Series is Q3 of 2025 so the A Series is last in line to get a firmware update to be able to use the AMS 2.
That AMS 2 page is not easily found so I saved it to my bookmarks.
The documentation and the organization of parts is lacking throughout the wiki and the web site.
I’m going to go ahead and buy a single AMS 2 along with a single AMS HT and that, along with associated hardware and cables took way longer than it would have a month ago.
Lots of page templates with no content.
Anyone getting an H2D with laser.
Personally I think for me, a stand alone laser is a better option. All the laser cutters and engravers I’ve looked at all have a substantially larger X Y footprint and a laser/router combo strikes me as a better fit all-around
Some other technical filaments’ instructions say dry only if signs of dampness occur, so I’m guessing they can be overdried also. Sorry I don’t happen to remember on which filament I read that on.
The plate thing? It won’t even fit in an X1. Where did you see this?
I subsequently saw that it is for the H2D.
BL Web people have dumped repair parts and accessories for the H2D into the store and they crowd out other legitimate parts searches.
The store is a jumbled up mess right now. I took a semi-educated guess on stuff to go with the AMS 2 and some other consumables I’ve consumed and it really takes longer because the stores automation points everything (or so it seems) to H2D stuff.
One would hope spare parts for the new kid on the block aren’t going to be needed right out of the gate.
They have said this and it is dependent upon the printer’s firmware. For the H2D you can use 4x AMS 2 Pro units and 8x AMS HT units at the same time for 24 spools. Also, if you put all of them on one of the nozzles then you can use an external spool on the 2nd nozzle as well for a total of 25 spools.
As of right now for the X1/X1C you can use 4x AMS 2 Pro units just like using 4x of the original AMS units for up to 16 spools.
For the AMS 2 Pro units if you are using more than 1 of them and want to use the drying function on more than 1 at a time then you will need to use the external power supply as the printer does not have enough power to supply via the bus cable to handle multiple of them doing drying.
Ahh, I see. I missed that context. That is a good question.
I’m guessing the original reason they didn’t support the AMS on it was that the printer didn’t have enough power to daisy chain multiple of them via the bus cable. So it could stand to reason that it may support 4 of the AMS 2 Pro or AMS HT units with the requirement of using their external power supply instead of bus power. I’m sure this is something they will address closer to when they release the firmware update for the A1 series.
