There is very little that I don't like. There are minor UI issues, but my 50+ year old brain thinks most modern UI's are lacking. My biggest complaint is that only one account can be connected to the printer at the same time. So if you want to share the printer with someone else in the household, you either have to share a login, or always be switching accounts. It isn't difficult, but seems unnecessary in this day and age.
There are times the filament breaks off inside of one of the bowden tubes. That's probably happened 4 times across the 3 machines I have. The biggest repair I had to make was when the filament rubbed through the bowden tube inside the filament box. Once I got it apart, many of the tubes were close to worn through. Maybe I had a bad batch of tubes? Maybe it was printing CF filaments? The one at work gets used almost as much and hasn't had any issues with the tubes.
The early machines also had an issue where the cable to the print bed wasn't properly secured. This caused the cable to break and the machine wouldn't level the bed. I replaced the cable and it has been mostly trouble free, but if I try and print at high chamber temperatures, it can still have issues leveling the bed. The two later printers have not had this issue.
I keep a spare hot end in stock. If a print doesn't stick and you end up covering the hot end in filament, it can damage the thermistor or heater wires getting it off. It only takes a few minutes to swap out, and then your back to printing.
If you like printing big flat things, I recommend cutting down a piece of glass/mirror and glue some steel to the back of it. I printed these (picture below) to hold K-Cups for the break room, and you can see it fills up most of the bed. If you print that on a flexible build plate, the stresses can cause the perimeter to lift. It stays stuck to the build plate, but the build plate flexes up off of the bed. With the glass build plate, you eliminate the flexing problem. It might still lift around the perimeter, but that's a different issue.
I've printed hundreds of spools of PLA and ABS. I have a co-worker who can say the same about PETG. I have successfully printed PA (nylon), PC, and some carbon filled filaments. That was mostly experimentation, and those filaments can still be tricky on the X1C. I assume if you print with them regularly, you start to learn how to make it happy.
The first machine I bought didn't come with the AMS. (The filament mixer box.) I didn't think I needed it, but the 2nd printer I bought I went ahead and ordered it. After about 1 week I ordered the AMS for the first printer. Multicolor printing has it's place, but it isn't something I do much of. (The photo below is of a 1/4 scale mockup of one of our machines.) The downside to multicolor printing is it uses a lot of filament for every color / layer change. The same is true for me regarding support material. I've designed parts to print without needing support for so long that I don't bother. What I didn't account for, is how nice it is to have two spools of the same color in the machine. No more throwing away partial spools because you don't think there is enough filament left to be useful. No more running out of filament mid print. I am now a convert.
My recommendations. Feel free to ignore:
I think the machines now come with the textured PEI plate. I do 95% of my printing on these, and rarely have an adhesion issue.
By default the slicer wants to print PLA with a bed temp of 35C. I had adhesion issues on my very first test print, so I bumped the bed temp to 55C, which is what I used on all of my other printers, and didn't have any more adhesion problems.
If I do need to print on the glass build plate, I use hairpray (Aquanet Extra Super Hold) with PLA, and Elmers glue stick with ABS.
I've purchased the Bambu filaments and they work great. My go to for 99% of my needs is Hatchbox.
The company overall is trying to be an inclusive environment. They sell printers. They sell filament. They have their own version of Thingiverse. (
Makerworld) I go to their forums from time to time and it seems like a bit of a disaster. Half the threads are about people stealing their designs, and the other half are how someone won a contest by only slightly modifying their design. (I think this is pretty common in that space, not unique to Bambu.) If I send a print to the printer in the next room, it goes to their server in China. (I think you can turn this off, but that also turns off most of the other advantages with being connected.) Who knows what I've told them they can do with that data when I agreed to the EULA.
That's all I can think of right now.
