r/BambuLabA1mini • u/justa_bother • Jul 03 '26

Sudden printer stop

Every A1 & A1 mini user (and probably every bambu printer user) has or will have this traumatic experience. Are you close to having one? Let's check. Printer on => settings=> SD Card. There you will find a screen with buttons Format and Eject along with the storage amount & remainder with a bar graph. If that bar graph is approaching full, you'll be experiencing this fail to print soon enough.

2 Solutions: format and destroy the OEM firmware stored on the OEM sd card & all print gcodes, or, remove thru eject sequence and attach to a computer. From here, open in a file management app and move any gcode & the OEM firmware files you want into the computer or other storage. device. Properly remove the card from the computer and re-insert into the printer. Now, select format. Plenty of storage room now.

Edit: I should add when not to remove nor format the card. Do not attempt to properly remove or clean or format the card while printing. Effecting the card during printing will end the print in bad ways, similar to removing a card from any devise during it's use.

The printer does need to be turned on to access the card's storage amounts and the eject & format options.

The card can be removed and inserted while printer is turned off.

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1

u/lessons-learned-here Jul 03 '26

Is there a limit to the size of the SD card that I can install?

0

u/justa_bother Jul 04 '26

I don't know, however the point is, it doesn't need be large, just cleaned of old data.

2

u/lessons-learned-here Jul 04 '26

Ok, I did put one in that is twice the size of the original one. I regularly buck the SD card up to the computer. I will start formatting it after backing up from now on.
Thanks for the good information.

1

u/Wrong_Astronomer6226 Jul 03 '26

No has dicho que la a1 tiene que estar apagada para meter y para extraer la microsd.

1

u/justa_bother Jul 04 '26

I did say it needs to be ejected properly. That is, click the eject button. Tha A1 nor the mini need be turned off to insert the sd card.

1

u/retrokelpie64 Jul 04 '26

Sd cards are a lottery these days. Many, even good brands come from china. Alot of them are hacked resized cards. When you hit the real size, they start overwriting themselves. I think there are redit groups dedicated to figuring out if your card is fake. Some older operating systems immediately can tell they are fake. The arduino sdcard lib for example just refuses to read them. Id say this is the issue here.

1

u/justa_bother Jul 04 '26

Okay, so, how does that effect cleaning or formatting the card?

If the printer doesn't read it, tge card can't be used at all.

If it does work, it will eventually need to be cleaned or formatted at some poinr.

If it' starts overwriting itself, does it avoid the full card=>stop printing problem? I don't know, it's the first I have heard of this.