I have a brand new P1S combo 3D printer. It printed benchy fine. I then printed the scraper grip and havn’t been able to print anything else since. I’m really frustrated because that was 2 days ago.
I have tried all sorts of things.
The original error was Fail to pull the filament…
I pulled the filament all the way out for all spools but the message would not disappear. It then changed to Failing to pull the filament from the external spool which I wasn’t using. I had trouble getting it to load and on the rare occasion it did I could see the green filament in the tube at the rear of the printer. But when I went to print it unloaded the filament and then came up with the same error.
I tried disconnecting the AMS and putting a spool on the external spool holder and fed it in as far as it would go. But the error message persisted.
I then tried heating it up and getting it to extrude through the nozzle. tgis appeared to work but still the same error message.
I reset it to factory settings a few times but still no joy. I hope someone can give me a simple explanation. I was going to print the AMS guide but I can’t print anything. I’m not realy keen to open up the AMS to check it out. But, seeing everything is brand new and just delivered Friday I don’t expect it to be brittle filament etc
Welcome to the forum.
I split your topic off onto its own. It sucks that you’re having issues. I can understand how frustrating that can be. The first thing I would check is if the full filament feeding path in the extruder is clear. The wiki has a good article on doing this. It shows the X series printer but yours if very similar.
https://wiki.bambulab.com/en/x1/troubleshooting/extruder-clog
Your filament sensor might also be stuck. Check the instructions here.
Thanks for your help Jon. I’ve heard nothing from Bambu. I really didn’t want to go through this whole remove the hot end and maintenance and repairs path. Not until I’d at least had time to print stuff.
I’d already seen where another suggestion was the problem with the slot 2 and 3 in the AMS and the part you could print to solve that. Of course I can’t print anything. The same here this link suggest a use the Gear Removal Tool and gives me the stl which of course I can’t print.
I thought I’d go ahead regardless. I’m assuming you can’t really lower the hot end very far which I’m finding quite awkward the first thing that happened in manoeuvring the fan out of the way I accidentally pulled it out.
I must admit, I’m very nervous doing this sort of work on a brand new printer which really should be under warranty - less than a week old. The tube was empty so its appears it might be either the sensor or a clog. If its the sensor wont I wreck my warranty by working on it.
Cheers
Rob
You are going to need to become not only familiar with the extruder and hotend disassembly but confident in taking them apart and reassembling them. It’s part of 3d printing.
You don’t need the gear removal tool. You don’t have to take it that far apart. You need to be able to clear anything in the filament path. This will not void your warranty. Follow the instructions given by Bambu. Be careful with the wires as they are delicate. Take the AMS and lid off as that will give you a lot more room to work.
Once you have taken the extruder apart and put it back together you will look back and realize it wasn’t that bad and will know how to clear filament jams in the future.
Don’t worry about the AMS. That’s not the issue. Get the printer working from the external spool first and then you can add the AMS back in. You’ve got this!
Yep - disassembly/reassembly is kind of central and inevitable.
Just the other day I had Bambu Basic Black somehow break in two places in the AMS. It was perplexing because I found the first break and cleared the orphan but there was another piece stuck in the combiner/odometer. I’m now very familiar with AMS disassembly and reassembly. It’s easy though.
Filaments can get brittle as they age and absorb moisture. As the filament bends or is pulled - especially with the tiny grooves that get pressed into the plastic from the metal gears that push and pull the filament - cracks can form and propagate through the strand and it can break.
You can minimize that to an extent if you trim the filament that’s been embossed with the gear ridges off each roll when you swap them out. (Not actually necessary) Those really are great starters for cracks. But spools left in the AMS also have filament with those ridges/grooves. It doesn’t make sense to trim after each use though.
Maybe better ways will eventually be found but the Bambu material handling is pretty logical and works pretty well. One thing I would ask for is easier access to the filament path. In the AMS it’s at the bottom and the whole tray for the spools and all the mechanicals have to come out as a unit to get access. A door on the bottom would make it easier to access broken filament but would also complicate the AMS housing design and add expense and chances for air leaks.
But Jon is absolutely right - it’s unfortunately inevitable that you’ll be taking things apart every now and then to clear breaks and even replace parts as they wear especially if you use filaments that have abrasive qualities like carbon fiber. Keeping filaments dry, keeping desiccants active, and “drying” filaments if they need it can all reduce breaks.
My old printer didn’t have these issues but multicolor was a totally manual process and had its own issues. I can count multicolor prints I did on that printer on one hand. It’s just the nature of pushing and pulling slightly brittle plastic filament.
I have found that with a new TO THE AMS filament, if you don’t trim the end at about a 45-degree angle it will can the filament buffer on the back of the printer and not be able to proceed to the extruder. if it is brittle or has been sitting out, the pressure can snap the filament in the tube. You don’t need full disassembly, just release one of the ends of the tube from the buffer and pull out the broken piece.
The extruder cover is held on by magnets and can easily be pulled off to check for any broken pieces there.
Thanks to everyone for their help. I get that at some stage I’d have to become familiar with assembly and disassembly, I just figured that I’d have more time than it being necessary to dive into that in just over an hour of my assembling the printer. Couldn’t I have had just a little bit of joy first. And, the error messages did my head in. I’ll have to learn to read the messages better.
At first I thought it was an AMS problem then it said the external spool which I wasn’t using. So I got very confused.
Thanks again for being so helpful and understanding. I’ll get back to it when I have more time.
Cheers Rob
Thanks to everyone who helped me with this problem. I manually pushed the filament through a few times and that did the trick. It ended up being much easier than I thought.
I don’t know if it will help much because the filament cutter slices at probably close to a 90 degree cut, but when prepping a roll to go in the AMS I always cut off a little using edge cutters for electronics with the flat side of the cutters towards the end of the filament strand. That causes just a little bevel most of the way around the cut edge of the filament which seems to help it getting into the extruder the first time but obviously is lost after the first cut done by the printers’ own cutter.
The other thing is when slicing the teflon Bowden tubing, I use a very sharp single edge razor blade and then very lightly deburr the inside edge of the tubing where it goes into connectors. You don’t want to deburr too much or else you’ll expose a ledge in the connector that can catch the filament and cause a jam. You especially donkt want to use cutters that squeeze the teflon and force it out of round. Sharp is key I think.
No idea how much it all helps but it’s been pretty trouble free in this respect.
Hello there, I have had problems with a P1S, it arrived at the beginning of January and just a week ago it started to fail, when loading filament it does not enter through the extruder and the filament returns to the AMS then it told us that the extruder was not working, we changed all the parts of the head, both the extruder and the tip where the filament is heated, but the same problem continues to happen and it continues to send us the same message, we tried to load new filaments from different brands but it showed the same error, we removed the cover and saw that the filament It entered the head, it passed through the extruder but seconds later the extruder returned it, the parts are new and we don’t know what the problem is, we believe it is the AMS but we are not sure.
Welcome to the forum.
Can you load filament from the external spool holder?
Yes I can the only problem is with the AMS
Does it do it in all slots of the AMS?
Yes, that happened in all the slots
Did you check and replace the PTFE tubing from the AMS to the print head?
Yes, I change the PTFE tubing
This fixed my problem. The smallest piece of filament was lodged in the extruder. Your posts gave me the information and confidence I needed to fix the issue. I’ve torn my A1 down multiple times but this was the first time tearing down my X1C which is more invasive. Thanks.
I was using an external spool on my A1 mini and I’ve been printing for days without any issues on both this and my A1, when out of the blue, the filament I took from the A1 would not load on the mini and it was giving me an error code I couldn’t find anywhere, but basically saying there is no filament on spool.
After going back and forth and swapping filaments, I discovered for whatever reason the sensor in the head was reading this filament has not being there when all it had was a small ‘melt’ as if it had been cut after heat creep and melted it a little higher up creating a tear shape at the end : it wasn’t clean cut. I cut this tier shape off and lo and behold the filament loaded straight away.
I have to say if I hadn’t gone back and forth methodically trying the same filament on the other printer etc (oddly, which did manage to load it!) putting that a clean edge cut filament on and it loaded I thought it may be the start of an intermittent fault but as soon as I took the filament back off the air one and tried again it failed this is when I looked at the end and noticed the little necked down piece.
Like I said once I had cut it square it went straight in. I hope this helps someone who has a similar problem. I realise that cutting the end of the filament had been mentioned higher up in this thread, but wasn’t sure if that user was having the same issues I was having, especially the odd code (Which I wish I had copied down now!)