I’m still trying to get my head around how the AMS2/HT units connect to the H2D.
Naively, since you have two feeds, and can add an adapter to each feed to support up to four inputs, I would have expected that mean you could add to total of 8 units (being a mixture of AMS2 or HT e.g. 4 AMS2 + 4 HT; 8HT; 8 AMS2 etc.).
However, that’s not what the FAQ says:
" What is the maximum number of AMS 2 Pro and AMS HT units that the H2D supports? How many colors can it print at most?
The H2D supports up to 4 AMS 2 Pro and 8 AMS HT units simultaneously, for a total of 12 units with 24 slots.
Since the H2D is a dual-hotend printer, in the most extreme scenario, all AMS units can be connected to one hotend while the other hotend uses an external spool holder. This setup allows the printer to support up to 25 colors."
That seems to imply that you can attach 12 units to a single nozzle? How do you do that (do the HT’s route through the AMS’s, for instance)?
However, having all the AMS/HTs connected to a single nozzle is less than optimal for material swapping. Can you spread the 12 units across the two nozzles? In which case, why can’t you connect 12 units to both nozzles (i.e. 24 in total)?
[this is all hypothetical curiosity as I don’t have to money to buy a H2D with 4 AMS and 8 HT anyway…]
Actually, I think I may have misunderstood what you mean by units. If you mean AMS units like AMS 2 Pro or AMS HT, Bambu Lab says 4 AMS 2 Pro and 8 AMS HT total. So, that’s 12 units total. Not sure the reasoning for that limit.
The daisy chain in your picture allows you to connect 7 units to the top feed input. Presumably you can do something similar for the lower feed input? But that gives you 14 units, not the limit of 12 limit described by Bambu Labs.
Obviously, if you daisy chain too many of the 4-in-1 adapters you’ll eventually reach a point whether the filament is in danger of always getting stuck, but I just can’t work out why the limit is 12, and not 14, or 16 etc.
Moreover, even given the limit is 12, why is say 6 AMS + 6 HT not an option? Or 2AMS + 10 HT? etc.
If this is just a software/firmware/slicer limit, I’m surprised Bambu Lab didn’t make a marketing point that future updates might support higher numbers of filaments.
I could be wrong, but from what I understand all that it’s saying is that, 99.9% of the time, the maximum colors you can have is 24
The maximum number of AMS the H2D can handle is 4 AMs 2 Pro and 8 AMS HT
But in an absolute extreme edge case where you needed a 25th color, it could be done by daisy chaining all 24 to one nozzle and a 25th to the other nozzle
