Somehow due to the A1’s incomplete firmware logic when running out of filament on the AMS Lite (combined with all the possible associated scenarios…see end of this post), the A1 now thinks there is an external filament spool loaded. Despite only ever using the AMS Lite, both in the printer and in Bambu Studio, when filaments are displayed, it displays the ones on the AMS plus a ghost spool of imaginary filament as an external spool.
The problem is the printer won’t let me go in and manually select “no filament” or “N/A” or “none” for the external spool. It only lets me select filament type (again, with no option in the list for “none”, and color.
So now in Bambu Studio, every time I load the filament types and colors from the printer (which I do dozens of time each day as I am printing on 3 different Bambu printers), the A1 shows the AMS-loaded filaments plus another filament type and color that do not exist. I want to get rid of the imaginary spool, both in the printer and in Bambu Studio. HOW?
Bambu Lab has not programmed the A1 for all possible scenarios with filament AMS Lite. Such as:
running out of AMS filament just at the very end of a print, but with not enough filament left to retract, yet you proactively replaced the spool while it was printing, and now it cannot retract the filament. Removing the newly inserted filament does not solve the problem. That is, it does not cause the filament to be pulled forward and melted through when another filament is chosen for the next print. The next print cannot be started unless you actuall manually push the new filament through to the point where the extruder gears can grab it.
And even though you decide to start a new print, the printer just can’t get its head around it, and somehow decides to think that you’re using an external spool instead of just trying to load the AMS.
Now you have an external spool of nothingness registering in the printer and in Bambu studio.
The printer won’t let you select a “nothing” or “no filament” for the external slot. You can only select a type of filament and a color.
SOLUTION: OK, I figured out this can be done in Bambu Studio, but not in the Prepare tab where filament values are loaded and applied to models. You have to go to the Device tab, select the filament, then hit reset. Not intuitive. Leaving this post up so others having difficulty finding it can also figure it out.
It’s also quite a bit frustrating that the external filament spool cannot be reset on the printer screen itself. Not everyone uses Bambu Studio. Some people print directly from Bambu Handy.
I have just got the AMS lite to go with an A1 Mini and I am having this problem as well.
On the device section of Bambu Studio it is showing the 4 filaments that are on the AMS lite and also 1 on the EXT spool and I cant remove the EXT one.
I tried clicking unloading the EXT spool, - the screen on the printer comes up with the unloading screen and the nozzle saying heating up, but nothing happens after it gets to temperature - I have to quit out of it.
Select the filament. If you do not do this, you will only see load/unload. You have to click on the picture of the external spool where there is a pencil icon on the spool. A popup window gives you more options.
Im having this exact same issue, but one worse issue. I got new filament and attached it to one of my AMS slots, and start a print. It heats up and all that but then it cuts the filament and pulls it back, then I push it back and it connects the AMS filament to show its the external spools filament, even though there is no filament on a external spool in the first place. Pretty much saying, my AMS filament is being wasted and somehow connecting to my “external spool” and before the one reply says it again, ive checked and there is no reset button for me. Ive checked the studio and everything and there is no reset. Ive clicked edit on the icon, and it shows the filament, color, minimum and maximum heat, synchronization, and thats it.
Reset button is in between the Confirm button and the Close button in the pop up dialog that opens when you click on the edit icon when on the Device → Status screen on Mac.
Sorry about that, I didn’t know there was a difference in studio and handy. I use bambu handy to look through my printer stuff, I have never used studio for my prints
Ok, well, it will be in your best interest to use bambustudio or orcaslicer to set this. I’ve seen the external roll represented along the AMS, but not experienced the bug you seem to have with it actually physically loading wrong filaments. I also do not ever use phone apps, so that may be part of the scenario
have you tried to look on the printer, on the filament screen ?
I had a similar weirdness, and was able to sort it by editing the filament of the external spool, by touching the “pencil” icon on the roll, to get a screen similar to the one posted above by MaskedMarble
then “reset” to clear, and the AMS is back again
Me and the other person talked about how I havent seen the reset button. What I most likely have to do is start my prints through Orca and take a look from there, If it doesn’t work then Ill come back here if there is a further issue.
Yeah, it looks like Bamby Handy does not have this feature. Neither does the A1 printer’s touchscreen. I just updated all apps and firmwares, and checked both. Once an external spool is given a filament type in either Bambu Handy or on the printer screen, you are stuck with the printet thinking there’s a roll of filament there.
As far as I know, the instructions I gave only work in Bambu Studio.
