Hi all:
I got my A1 a couple of months ago, and worked fine for a while, but since a few weeks the prints constantly stop complaining about filament or extruder being stuck (AMS). The filament is Ok, I just hit retry and continues until fails again a few minutes later.
I tried cleaning the extruder as per the wiki, swapped the hotend, different filament, etc.
Filaments: PLA. Brands: Bambu Matte, Overture, eSun
Already logged a support ticket, just waiting for now.
Any ideas would be greatly appreciated.
LOL< I was just going to post the same thing, my AMS unit wonāt advance, and the external is having the same problem after several fails on a PETG Filament on a little dummy 13 bot for the kidsā¦grhhh!
Take a look at your ptfe tubes. If there is wear (ID getting larger) it will cause play that will make the printer think thereās an issue.
PTFE tubes are consumables. Depending on what your printing they will wear.
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This thing is quite new, maybe ten things printedā¦just to experiment.
It seems to not be as reliable
As my P1P, and I just began using the AMS on the miniā¦.so in trying to use the Petg for a different effect and to try out how it plays with PLA, I now have a mess. I read the Wiki, cause I gave up on repeated errors, and now I guess the unplug process will beginā¦I also tried the external spool holder and also to no avail. Bugger!
Is there a relationship between this problem and the angle that the ptfe tubes line up with the filament hub? The tubes are not at the same profile as the hub or different wording, the tubes donāt extend straight up from the hub. thanks.
Too sharp an angle would interfere with feeding. However it should throw an error if thatās the issue.
I forgot the A1 nozzle etc doensāt āplug inā (cables). Sorry I cruze the forums and forget to look at which one Iām on sometimes.
If itās AMS related usually you get an issue. You should be getting an error. You may look carefully at the PTFE path from the AMS to the print head. I would try feeding from the external to see if/where the problem lies. If it feeds from the external then itās the AMS. If it doesnāt then itās the filament path/extruder/splitter.
The angle is not that great, maybe 1-3 degrees. I disassembled the hub and didnāt find any debris inside. I did find some sort of residue from one filament I used that is ātackyā. I used a nylon cleaning piece, which didnāt seem to cause an issue. How far into the hub should the ptfe tubes insert?
Believe itās just like a mm or 2. Itās not very far. If you havenāt run a piece of fiament through all 4 all the way through.
Matter of fact, cut a piece about 50 or so mm and disconnect the hub and feed the filament directly through. If youāve cleaned the extruder then it should feed through.
Also, you said you switched nozzles. Are you certain that nozzle isnāt clogged or was it new? Should have asked this first.
Yes, the nozzle is new. I have a backup and will try it. What is odd, is that this happens at the start of the print when I choose a different filament, so it has to go through the unload/load cycle. But occasionally it occurs in the middle of a print.
Also, thank you for your time and help with this.
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What filament are you using?
Bambu and Overture, PLA 99% of prints. I printed two small pieces of TPU with no issues. Maybe two prints with PETG.
somewhere thereās a blockage. If the fialment is being loaded to the extruder but nothing is coming out, then itās a clog or the extruder isnāt working. I think it was mentioned that you should be able to see the extruder moving. If it isnāt then thereās your problem, somethings been put together wrong. If itās moving then the filament is skipping or thereās a clog.
double check your work.
I plan to find the issue or replace the tool completely. Thanks again for your help. Can I buy you a coffee or a beer, I feel obligated.
Iād feel better if you were actually printing.
The filament runnout is connected properly as well right?
Let us know when you find out what is causing the issue.
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I just took a piece of filament like you mentioned previously and fed it into the hub with no ptfe. Cycled through a few extrusions and retractions with no issues. Now I have a spool fed into the hub without the AMS and no ptfe to try a small print job. Also using the same nozzle.
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Test cube I printed to check printing without ptfe and no AMS. I would narrow down the issue to the AMS or ptfe tubes. Iām going to try some new ptfe tomorrow.
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I had the same issue on my A1 as well. I followed some ideas from @johnfcooley and seem to have reached a fix. I hope you have had the same result with your issue.
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i have a same A1 bambu works perfect now cloget all time whent filament change gonna return !
Iāve had my A1 for a week, and even using Bambu filament, this has happened 3 or 4 times already. One annoying thing is that the printer just keeps running indefinitely, with the bed heated. So, it failed an overnight 4-hour print right at the first layers while I was sleeping. The printer stayed on, waiting for me until morning.
We could really use a ātimeoutā option for these cases, or maybe the app could send more alerts.
Anyway, I think the AMS angle to the printer might be part of the issue. Iāll try angling it more toward the printer to reduce stress on the PTFE tubes. The system seems really sensitive to that.
Do you have the bed aligner installed on the back right side of the build plate? That seems to be causing the error when the hotend moves back to that corner to check if there is something there. If you have one installed, try removing it, and see if the error goes away. If so, and you still want to have a plate aligner, there is a newly designed one that is supposed to not cause the error.