I think we need to combine all your threads into one and call it “Whoooos ready to rumble!!!”.
Hey, we could write a book!
Chapter 1 - How some folks can break an anvil with a glass hammer.
My P1S was the biggest pile of ■■■■ I have ever used. This junk barely lasted 1200 hours before I donated it. Everything broke down in it multiple times, even carbon rod assembly glue cracked.
On the other hand, X2 and H2 are rock solid. No major issues so far. H2 series is super overcomplicated with questionable part selection (hello toolhead fan). However, X2 is truly marvelous machine. It’s dual nozzle with a simple and light toolhead design. Everything is accessible enough.
So … I’d say that no, 2nd gen machines are notess reliable. If all, BL learned from silly mistakes they made in the first gen and avoided them in the 2nd.
I am a firm believer that sometimes you just get a lemon.
…
What no one has mentioned, what are we quantifying as “reliable”?
To me thats 10k hours with a few minor and maybe 1 major repairs.
Indeed, it’s a matter of perception and perspective, as to me reliable translates into 10k+ hours without any kind of interventions or repairs… oh well, let’s just say, with one or perhaps two nozzle replacements, due to normal usage.
With that standard, what printer fits that? Reliably is mostly in comparison.
Ive gotten a few machines over 10k. Even with a few repairs, I still look back at them as reliable.
And I would agree with that.
For reliability, I think 10k hours is too much to be honest.
5k hours is more like that, considering that you need to built a statistic across the board across many units. You can’t just cherry pick 1-2 units and then call it a reliability.
To date, none, although my first X1C is nearing that point (9.124 hours), with just 4 nozzle replacements, 1 belt tightening, and a led lamp replacement, but I suspect this situation will soon change and require some additional spare parts replacement and other more demanding work.
Your probably right since my 10k hours estimate is taking into account some repairs. Which I look at repairs as just part of normal use to a certain extent.
I can agree with 5k hours because that is probably more in line with what the average user would run the machine. I haven’t had any major faults until past 8k hours.
Couldn’t disagree with this more.
Although the machine has some merit. Being simple or accessible is not among them. It’s one of the more complicated machines Bambu has (in regards to external moving parts that need to be connected), and has one of the most complex toolhead designs in the Bambu lineup.
I wouldn’t recommend it to anyone without at least advanced printer maintenance skills, and willing to tinker with it quite a bit. Definitely not the plug-and-play design we’re used to with P1 & P2 machines.
Oh wow. 8 guess you haven’t seen any printer designs out there, eh?
Have you ever seen H2D/C toolhead design? Good luck with that one lmao. Yes, X2 is a bit more complicated than P1 and P2, but you have to take into the account that it’s dual nozzle system that will be more complicated than single nozzle, no matter what.
For me, the H2D has been their best release. My favorite printer. I’ve used the X1C, P1S, A1 Mini, A1, H2S, and X2D.
I haven’t used the P2S, but I see it kind of as the full successor to the P1/X1 series. The X2D feels more distilled to those engineering roots, and I feel like that throws a lot of people off. They expect something more consumery, but that printer wants to be more engineery.
My H2D’s have been rock solid though throughout. I like them so much more than the X1Cs or P2Ss I’ve had. I have a X2D, which I use and like, but I favor my H2D printers first, and only really spill into the X2D when I’m doing a ton of printing.
Across the board I haven’t really had much in the way of issues, so I can’t gripe about how difficult this or that may be to fix. Every issue I’ve had has been easily fixable. So like, I mean, I haven’t had something jam up in the extruder yet that required me to take the head apart, so I don’t know those pains are how bad they really are. Good for me, I guess.
I just finished a 19 hour PETG print on my H2D, it used about 950 grams of filament. Turned out so nice! I’m feeling good right now. Confident to start some more long heavy filament prints 
In general, a more complex machine is less reliable than a simple one, all other things equal. The question is by how much and if that makes a meaningful difference in user experience.
However, individuals’ perception are also influenced by at least two other factors. One is the difference among machines, even within the same gen, same complexity, due to manufacturing and quality control variations. The other is users themselves with some enjoying simpler machines more due to preferences and/or skills.
It’s much more than “a little” more complicated.
P1S extruder assembly/disassembly by Bambu guide is a 2 minute video. for H2D it’s 9 minutes. For X2D it’s almost 12 minutes.
The fact that there are some designs even more complicated (supposedly) , doesn’t make X2D design “simple” or “accessible”.
So … You are judging the complication based on … the length of the video? 
Just fyi. Even in your video link, extruder assembly was out by 4th minute mark. 
You better educate yourself on the subject prior to typing the next response.
So, regardless of how meaningless the comparison is in terms of the length of the video - because it doesn’t just show the removal, which would take about the first five minutes, but the entire disassembly of the unit - I was wondering where you got the two-minute P1S video from.
I was already wondering why you didn’t link to it: Bambu doesn’t have a video about the P1S on its official YouTube channel nor on its wiki? The only video I found that lasted 2 minutes showed the replacement of the sensor, but not the entire unit of the P1S.
Please post the source of the video. Now I want to know exactly which video you’re talking about. Thanks. 
Real mature…
Instead of adressing the issue of X2D extruder being overly complex - let’s focus on the lack of video link…
FYI, this is the video I was referring to: https://www.youtube.com/watch?v=WhsBu-6n5go
It’s for X1, but P1 process is identical.
If you’re counting, the extruder is out on the 45 second mark.
In order to address any of the issues, first, one has to establish this as being an issue.
I don’t see any issues with the complexity of X2D toolhead.
Instead of referring to the video time (which to be honest made me laugh hard), let’s refer to the official wiki guide.
X1/P1: Replacing the extruder | Bambu Lab Wiki
X2D: Extruder components Replacement guide for the X2D | Bambu Lab Wiki
P1 is done in roughly 7 steps, while X2 done in 9 steps. Is it much more complicated? Not at all. Is it more complicated? - Yes, it is more complicated due to the dual nozzle design.