Ok, so we are fairly new. I use a Creality Ender in school and it’s easy to adjust the nozzles, purge filament etc. We have had the Bambu P1S with AMS since March.
Learning as we go, this site is great, YouTube is so helpful. I took advantage of the Bambu sales to have some extra parts on hand…
Here is the problem, maybe this is covered somewhere, I dont want to be redundant. If so please if someone can provide a link. Anytime the AMS has to switch colors or pull filament (using all Bambu filament) it gets “stuck” it seems like there is something with the sensor because sometimes if I just wiggle the filament a little, the light goes from red to white, and printing can resume. It isn’t one specific AMS Bay though… and I have noticed it is having difficulty reading the RFID on Bambu filament. Do I need to reconfigure AMS, is there maintaninece we should have done by now after many prints since March?
I am a newbie, so any and all help is greatly appreciated. Thanks!!
One thing I found when I got my first AMS that wasn’t super evident was that you need to be aware to only add filament when the printer is sitting idle. If you add it while the printer is printing the AMS will load it but it won’t recognize it.
The Bambu system is neither prefect nor intuitive.
With Bambu spools no user should have any worries but they do…
Quality control, or the lack of it, often means machines are shipped that had little to no real world testing prior to shipping.
Having to wiggle filament so the AMS feeder finds it is a bad sign.
Don’t know how much filament went through your machine before it started to play up…
You can take the AMS and feeders apart.
If you had some bad prints or filament transport issues in the past it could be accumulated plastic dust and particles messing with the sensor.
thank you for the assistance, we plan to take apart, I am also reading that despite bambu claiming glo filament is ams ready, many say it is not. this is what led to this problem!
I ran about 6 rolls of glow green and two rolls of glow yellow through my AMS with no ill side effects or signs of wear.
But then again, I am not using Bambu filaments any more.
My glow filament is VERY hard, very rough but it is not of the usual sandpaper outside appearance.
I put a roll back in that is about half empty and thing I spotted the main difference that saved my feeders so far.
The filament is so stiff that even when pulled back it comes out quite straight and does not scratch over the plastic much.
The white PLA next it does this looking you pull directly on a string but not filament, VERY flexible.
As for taking the thing apart…
It IS good to do this anyway, even if it for peace of mind and to learn the required steps.
Pay attention to those PTFE tubes and the push connectors!
Ideally they should go all way into the connector and stay there FIRM.
You will probably find that this not the case.
Bambu used connectors with a good grip, making them secure, but they also come with a bit of free play.
This can cause some filaments to get stuck.
If there is a gap between tube and connector than the bump stop is exposed.
In a GOOD connector NOT intended for gases or liquids this bump stop is slightly conical or comes with a rounded edge.
If you find seemingly loose tubes :
Cut a piece filament with a sharp knife to get a good, clean edge.
Pull on the tube and see if the filament runs through the connection fine when you push it back and forth.
If you feel bumping or even that you get a bit stuck at times you have a low end connector.
Best way to make sure this causes no problem when starting a new roll is to NOT use side cutters or such to trim the filament - they squeeze the filament and bring rough edges
If you have a compressor then use it!
If not even a balloon with a straw does a good job getting dust and other leftovers out of hard to reach places.
For the optical sensor even a spec of filament dust can throw them of.
Bambu has a Wiki page somewhere explaining how to take those feeders apart without damaging them.
Although not too likely it might be as simple as something being loose in the feeder.
