I was hugely disappointed that the teardown gave no more than these sparing views of the heated bed:
Maybe it was of little interest to this particular youtuber, but I know a lot of people on the forum here are quite interested in knowing (and seeing) all the details, especially given Bambu’s wiki description of there being two heating systems for the heated bed.
I have still not seen a 2nd heater. Next time I have the back off, ill look for 2 bed heater plugs…But Im doubting ill find more than 1
This is approximately what I measured for the X1C, so I would agree. However, there is as well an offset. @ 110°C, temperature is approximately 100°C (10°C lower). Unfortunately there is no way to compensate that as 110°C is the max. you can enter in the HMI.
Finally, someone called it an HMI
The title states “sanctioned”.
It doesn’t look it was.
That was cool, I think I could also disassemble mine , but it would never work again for me as I’d never be able to put it back together hahah
But if you take it apart, you can find all the extra screws they put into these things and use them somewhere else! 
You can clear see in the screen grab from Neverdie, there are four heater wires… And two parallel elements… That’s two wires per heater, two heaters.
To make it extra easy: it appears the blue wires are the neutral side, the red and brown wires are the supply to each of the two respective heating elements.
I guess ive just never seen them heated seperately. Or switching. Maybe nobody has caught that on camera, or I just didnt see that video. I do see the obvious dual coils. But they look identical. I see that they are each powered. But havnt seen if theres dual control. Thats why I said next time I have the back off, Ill actually look at the board connections.
The video is great for other companies to start mimicking Bambu. As for difficultly and labor intensive I don’t see it.
Other companies don’t really need the video, they just buy one or more themselves and do an even more detailed tear-down.
It’s a common practice in many industries.
In the car industry most have a separate department that buys cars, tear it down and display all parts for a period so engineers can come over and see.
After that they re-assemble it again.
They even have a planning for which brand/model is on display when.
You’re absolutely right but seeing a tear down not done by someone that does reverse engineering to products also shows changes done by the company that is not told to the customer. The X1C has had 18 internal physical changes in the last 3 years. The X1C has also been manufactured in 2 different locations too. Meaning that the builders sometime do not follow the build quality and guide. Any outside resource is valuable.
Where did you find that information?
If you count every detail I would guess it must be even more.
If you are in a place like Shenzhen, the suppliers are all right next door, and this makes it a lot easier.
The build sites are common knowledge now. The R&D group sites that I am part of and involved with have quite a few people working in Shenzhen and Wuhan. Thats where they build the creality products. There is also builders and R&D people in the same groups working for canon and Konica minolta. Shenzhen and Shanghai is bambu’s two main manufacturing as of right now. The main 18 internal physical changes were posted for information to identify improvements or fixes. One of my companies manufacturing is in dongguan. Only an hour from shenzhen. But a lot of these guys are involved with manufacturing parts.
