OK I must be missing something. The item the OP found was a REPLACEMENT extruder for the A1 that advertised dual-gears. I have not seen anything on the BL website or store, or heard of anyone who has seen any marketing material that states that the A1 series COMES WITH a dual-gear extruder in the box.
If I am wrong, please provide a link.
Yeah you have a dual gear shooter in your hand. You want to be technical actually a three gear.
So a gear is a tooth wheel. Now the advertise dual metal gears. So if you look closely youāll see very fine teeth those are gears. So now if theyāre not lying on thisā¦For a change. I have no problem calling out bambu Labs but this is exactly what they say.
That is just a problem with your definition.
Again that just isnāt true, again it is a problem with your definition. All that a dual gear extruder generally means is that it has two driven wheels, connected through gears.
It is a term used to differentiate from single gear extruders where they have one driven wheel and one undriven wheel, like you see in the A1.
I think you are mixing up ādual gearā and ādual driveā and they do not mean the same thing.
Also a dual drive system doesnāt really require four driven wheels, it would still be dual drive with two driven and two (possibly only one) undriven just as long as the two driven wheels are driven independently.
The only thing I have to define for myself is that if something runs through two wheels, in whatever way, there is may be someone who calls it dual 
Dear @Geekgarage, yes 50 cent can matter, youāre right. You hit the nail on the head in the last paragraph. When it comes to printer prices and what they do, I actually should keep quietā¦ However, Bambulab descriptions are to read carefully. For example, the fact that TPU is only listed in the description from AMSā¦ and the scope for interpretation is used very diligently, but that topic has already been discussed enough
Addition: I really had to think for 2 hours about whether a single gear drive would come to my mind and I actually found one:
I see you just seem to be someone who thinks you are always right and canāt even comprehend that you are actually wrong.
Again you are wrong, that is not a single gear drive at all. Where is the gear? The wheel is connected directly to the pedals, no gearing, hence you canāt call it a āsingle gear driveā.
It seems your definitions are all very wrong.
So the only prove what i found were makes the A1 dual gear may to a dual gear is wrongā¦ you are right, the connection between Gear and ground as the static part do not count at all, also in your point of view (with the exception of a unicycle but just in my point of view, oh lord how crazy this becomes to call the A1 calling dual and to reflect myself to give a prove to my that may some is right)ā¦ so you may will get the point ones in a lifetimeā¦.
May once in a lifetime somebody will figure it out and will show my a single gear which is needed since there this amazing declaration as a ādual gearā. Have nice day may god hold the blessing your life and all the best for your personal future. God bye to you.
Since the only explenation is now it`s a Dual gear on the A1 but there is no single gear drive staing as singel induvidual on any machine at all (also if this on the A1 can by called as dual gear on the A1- which I also reflect to my if I m wrong but no one gives an explantion how a single gear should look like so I have to estimate there is no oneā¦). So something is note which is anyway needed and if someone corrects me on this point I will by even thanksful, since I m often wrong
But now problem, if something like things are happen, take the next plane and leave the continent for the next waiting JOB which you can choose out of a long line, do not go back after they figure it out because if the next issue on the machine is happen, they will discuss it again on the Personal level. (but this last Paragraph do not belonge to the A1 - it can work and the A1 will say/confirm is the construction for the mater is right or wrong and nobody else and I think (and this is just personal) overl all, the machin it`s ok and may fits to some needs)
Thereās a single gear. Is that we all started back in the day. We had to build our own hot ends then we had to hob our gears. We actually had jigs that you would hook up so you could hob a gear with a Dremel. Then you had a 608 bearing that would ride on the other side and press the filament into that. That was horrible then we moved to dual gears that used to hob wheels And I provided more grip. Then for some reason we went to dual drive which provides a little bit more grip but provides way more force but honestly we donāt need that much force on extruder.
Back in the day my old 3D printer when dual drive gears first started coming around I had a spool fall off the spool holder And that dual drive grab the filament and it lifted a 52lb printer in the air unit it grinded through the fillament and that snapped and dropped it.
What bamboo really should correct it. Or correct the X1 and P1 series with dual drive someone thatās new is going to get that confused if we look at that and they say well the expensive one has that but also these lower-end ones have it so why when I save some money and get this? Itās unintentionally deceptive whatās on again that would assume that Bambu actually cares about its customers and they donāt and time and time again they show that they donāt care about their customers.
Have you had a stroke? That last comment of yours makes little sense.
How hard is it to just look at older printers and see that what is called a single gear extruder has a gear on one side and a bearing on the other with the filament in between?
Any update on this topic? Thanks!
What update do you want?
The fact is: the A1 only has one driven wheel. The other wheel is just a folloing guide wheel.
Regarding the course of the discussion:
What was said at the end was my first statement. In between, I questioned my opinion as to whether I was wrong and how a single dreven wheel should look like if I m wrong. Since there was comming a lot of other views - but in the end someone confirmed again that an individually driven wheel is a singel driven one who still thought I was taking him seriously. In doing so, he have only reconfirmed again that:
Finaly:
Bambulab calls the A1 a dual drive by a single driven wheel and a non driven following guide wheelā¦ Whatever you want to call it, it really doesnāt matter. The A1 is the only printer with a driven wheel and a second, non-driven guide wheel. Bambulab calls it dual drive and that is a statement in a staitement in it self. An staitment that I have to read everything that comes from Bambulab 20 times and to check it 50 times and review Bambulab Printer extrimly cearfull before buing itā¦
But it is also understandable since:
Xi Jinping calls on young graduates to go to the countryside - the students (who got all the attention from the 1 child society) who dreamed of prosperity and well-paid jobs are now queuing up for few jobs. The pressure to perform is great and this is reflected - there is no easy, quick money and education doesnāt help always. There is a difference between smart or intelligent and studied - if you have the choice, get smart.
Thanks. āupdateā regarding any 3rd party real dual gear/dual drive 
hardened steel assemblyā¦
I can understand your wish.
Just you donāt miss it:
I would even say that the original implementation on the A1 is more correct than incorrect. Overall, I donāt see any outstanding benefit from an introduction to the A1 setup.
Someone described it well here, but I canāt find it right away, I just remember itā¦
However and in additional:
Pressure Advanced would also have to readjust the slip, if available, since it is also a dual drive?!? Pressure Advanced would have to regulate the driving wheel directly so also readjusting slipping otherwise I would not know they can regulate the supply quantities. This only can by done by the driving gearā¦
And in a expert view:
Dual drives are only used for continuous material feeding especially with softer or extremely hard materials (although the latter, hard materials, does not exist in 3D printing anyway) for more stable feeding. Than 8 and more roller feeders are used in other industrial sectors as well. There also other solutions like push pull, which would then be a direct extruder after a bound exdruder, whereby the direct exdruder would have to run a little fasterā¦ but thatās the high end in other non 3D printing industrial fields.
Does it work? Iām trying to print pet bottle filament but my extruder slips in place(A1 printer)
