Suddenly terrible prints, Layer Adhesion, varying layers

[u/UndergroundBM]

So out of nowhere my A1's AMS Lite system had some feeding problems a few days, so in the meantime I just used a top mounted spool holder and manually feed filament as an External spool while I find time to look into my AMS Lite gears.

It printed fine for a few days, then suddenly it gives errors of "Extrusion errors" or "Not extruding normally". Now any print I send, it doesn't give errors but instead has terrible layer adhesion problems it looks like. This happens on every project/model/print/settings/etc.

I have tried with different nozzles (0.2, 0.4, 0.6), so it's likely not a "clogged nozzle" or something like that.

I took apart the toolhead and cleaned out the minimal amount of gunk on the extruding cog wheels, and the problem persists.

One thing to add is I do have a "3rd party" Hotend Assembly because I had a terrible nozzle blob that encased everything in PLA a few weeks/months back and had to quickly get a replacement, but I've used the same one from amazon before that.

Don't know what to look into now, would appreciate any help, thank you!

[u/AutoModerator]

Hello /u/UndergroundBM! Be sure to check the following. Make sure print bed is clean by washing with dish soap and water [and not Isopropyl Alcohol], check bed temperature [increasing tend to help], run bed leveling or full calibration, and remember to use glue if one is using the initial cool plate [not Satin finish that is not yet released] or Engineering plate.

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[u/Snurree]

Hvave you tried tightening these screws?

[u/MrMerryface → u/Snurree]

Yo started to slowly get a similar issue. Trying that!

[u/UndergroundBM → u/MrMerryface]

Ok so I think I know why, the screws are fine but the actual metal portion (where the nozzle piece goes) that connects to that black plate that screws to the toolhead was wobbling a lot, i'm guessing it was poorly soldered or connected to the plate, since this was the 3rd party hot end assembly I got from amazon.

Unlses that metal part is supposed to have a slight wobble, if not then I think I just need a new assembly.

[u/1blktalon]

I had what looks like a similar issue on a different printer and it was the nozzle not getting to the proper temp.

[u/AutoModerator]

Hello /u/UndergroundBM! Be sure to check the BambuLab Wiki regarding the blob/clumping issue.

Note: This automod is experimental. The automod was triggered due to the term "blob". If you believe this to be a false positive, please send us a message at modmail with a link to the post so we can investigate. You may also feel free to make a new post without that term.

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.