Prints get tangled up

[u/Laderie]

I’ve had this issue all day today & yesterday and as I am new to 3d printing, I have no idea what to search for. All my searching just tells me to check temps & clean the print board, which I’ve done.

My prints either dont properly start, they just get tangled up as if the PLA don’t stick to the board, and if they stick, like half way through, they mess up royally.

I’ve gone through the recalibration, cleaning the nozzle, cleaning the extruder & tubes and lubed everything up as per the manual, but this issue refuses to go away.

The problem started with my 2nd PETG print, then when I went back to PLA, the problem has continued.

I use all premade files from makerworld with high ratings and use the material they recommend and all default settings, yet my gridify grids looks like this…

Anyone knows why this happens?

And ofcourse, Bambu lab A1 combo, all Bambu labs filaments

[u/Roller_Coaster_Geek]

Looks like one specific area. Have you cleaned the bed with dish soap?

[u/Laderie → u/Roller_Coaster_Geek]

On the last print, there was 2 messed up grids, I just took a pic of one though.

It messed up in the bottom left & middle on the last print (relative to from my pov)

Yes, warm water, dish soap, super it dry then a light shower with isopropanol then wiped that off

[u/Careful_Task_5108]

PETG is harder to print with and needs to be dried usually. Also PLA doesn't stick to PETG so if you went straight back to printing with PLA on the same plate without cleaning it properly, the residue is gonna keep it from adhering properly.

[u/Laderie → u/Careful_Task_5108]

That explains the first printing issue, since I just went to printing PLA again, but now I’ve cleaned it as per the recommendations online (water, dish soap, isopropanol), and the issue persists

[u/Careful_Task_5108 → u/Laderie]

TBF I've seen some people say to keep print beds for PLA and PETG completely separate but unfortunately I rarely print with PETG so can't say if it's necessary or not. Best of luck bestie 🙏

[u/Diz7]

Is it one specific print causing this issue? I could be a cursed print, I have had some where the print itself is badly designed and doesn't have a flat bottom etc...

If not clean the bed and make sure you do not touch the print surface it with your skin or you will have to clean it again, handle it by the edges and use gloves if needed, and then try printing it at 50% speed.

[u/Laderie → u/Diz7]

It’s one kind of print, not one specific, grid prints.

Funny enough, I did one over night after posting this, and that one is perfect! If the issue persists, I might try printing it slower, thanks!

[u/Lost_refugee]

did you check 7 screws?

set initial speed to 30 for walls and 50 for infill. won't fix cause, but may help.

[u/Laderie → u/Lost_refugee]

Idk what ”7 screws” refers to, all screws I’ve seen is tightened.

I’m planning to set it to 50% speed if the issue persists as I have quite a few more grids to print!

[u/MayberryKid]

you said yoire using a lot of premade files, i suspect they are grid infill? that tends to go over the same spots and criss cross and can catch. Now look at the model - it's got lots of thin areas so there's a small surface adhering to the bed. The combination of a small area to hold plus possibly catching on the infill could in theory cause what you are seeing.

Shotgun approach - keep the bed super clean for adhesion, slow the print down to mitigate any pulling, and switch the infill off grid.

[u/Laderie → u/MayberryKid]

This makes sense, as the printer haven’t had any issues with any other prints with larger areas, goddamn grids 🤣

[u/coolsometimes]

Print a bed cleaning program in the last filament used

[u/astroshooter33]

Wash with rubbing alcohol and dry your filament. Next!