Hello there,
if i print pla on my X1C with closed enclosure i get some issues. Print looks at a certain point very good, but then no filament came out of the nozzle. It starts printing in air. Sometimes it finished the print, but one layer is missing. I’ve read a lot in reddit that some people have no issue with pla and closed enclosure. How is this possible? How are you printing pla on your X1C???
Thnaks
Door always open for PLA. PLA starts easily to jam at around 50C.
With enclosure closed i get 37°max. I’ve to say im printing with textured pei.
But it is much warmer inside the printhead, also before the hotend. So it can jam before the hotend.
Your right, i think this is the problem, too!
What temperature do you have at home?
You don’t only have to think about the temperature inside the chassis.
I print pla with closed printer’s door
You see, now we have again someone who has no issue with printing pla in a closed enclosure! How?
I had the same issue and had to disassemble my extruder to fix it, but it only happened when I set a 55ºC bed temperature so the chamber got to something like 40ºC during the print. Not a great experience. It didn’t happen at all with the default 35ºC Cool Plate temperature though.
Also not all PLA is the same. I have some that start melting at >60ºC while others, in particular some fiber-filed ones become soft much much sooner, like 50ºC. The heatbreak in the X1C doesn’t seem to do a particularly great job when you have warm air in the chamber and this causes issues where the filament expands in or near the extruder and jams it. I think if you tuned/disabled retractions it might work better, but then you get other issues.
What is your ambient temperature? Are you in a very warm climate?
You can discuss about a solution as much as you want.
Certain Filament, especially PLA are not created to be printed in a Chamber and it will always end up at some point in a jam/clogged hotend. Especially PLA was founded to print with low environment temperature if you don’t habe the opportunity of a chamber.
If you want to print enclosed, ABS/ASA are your friend. PETG is already borderline.
Bambu can’t change these facts, whatever they advertise.
Yeah my room is small and its an atic apartment. In summer its getting very hot and im not printing!!!
I’m new to 3D printing and only used Bambu Lab PLA (about 3 kg printed so far) and bit of eSun silk PLA. I use the AMS and have the door and glas top of the X1 carbon closed but had no issues so far. Most of the time I used the cold plate but for a few prints I’m using the textured PEI plate now. Both with great success.
I’ve banged out hundreds of prints on my X1C with the door closed
Bed temp for my textured PEI plate 55° nozzzle temp 230°
Part fan 100%
Aux fan 70%
Chamber fan 30%
No heat creep, no issues, good print quality
PLA I use is Eryone, Polymaker, Esun, Geeetech, Overture and I absolutely always put the rolls in my drier or modified food dehydrator right out of the package plus I store them in a big air tight Rubber Maid tub with a container full of that stuff you buy to pull moisture out of RV’s or anything in storage (not the silica gel, I already got schooled by my lack of correct terminology on that lol)
The other factor might be speed, try and slow it down a touch, if you run it in Sport or Ludicrous mode try nornal mode
If its already in normal mode and causing the heat creep issues double check your slicer profile, it is very possible that something may have been changed inadvertently or changes where made and did not revert back after the next model was sliced
In my case though the enclosed chamber has not effected any of my prints in any way regardless of if I’m printing PLA, PLA+, CF, or TPU
I haven’t printed PETG on mine yet, I currently reserve my other printers for that
What can I say, good for you guys! Not working for me. 
I was not aware the door must be opened while printing PLA.
I printed a lot of PLA since I have it, and never had any issue 
I have tested with Standard, Sport and Ludicrous speed without issue 
sorry for you but seems like there is an issue with your printer. hope a new firmware update will help you.
Are you in contact with Bambu Labs support? I would open an offical ticket if you haven’t already.
I have printed door closed using eSun PLA and PLA+ with varying room temperatures as summer rolled in 19C to 31C.
Bambu states printing with the top glass off and the door open for PLA. So, if you aren’t doing that and something is going wrong, then I would say you need to heed their advice and print it the way they say.
Man for what? They will say you have to follow our recommendations for PLA and thats what im doing.
The only thing what im curious about is, why its working for some people, thats all!!!
You state that you are printing PLA in a closed enclosure so how are you doing what they recommend?
Not anymore man!!! I’v tried it, because i had read that a lot of people are printing like that.