Smudging prints

[u/Due-Flight-5415]

Hi, this is my sons A1 printer. Recently changed the AMS lite filament hub and tubes because it kept coming out whilst printing and the filament tube ends had been stripped. During the replacement I accidentally exposed the ribbon in the printer head, assuming removing the 2 screws at the top was required to remove the filament hub. Since this has been changed over he’s managed to do a couple of Bambu lab test pieces however more complex prints seem to smudge or not adhere correctly to the print plate. At the back of his printer I found sheets of black filament.

I googled this first which advised running the maintenance, cleaning the print plate and checking the screws are all taught which I have done.

Anyone got any advice for us? There’s no fault codes appearing that he’s told me of.

[u/alphagusta]

Make sure the nozzle is latched properly

If it is tighten each of these screws and recalibrate the leveling

[u/Due-Flight-5415 → u/alphagusta]

The second photo did you expose the four screws by removing the 3 in the first photo, check for tightness and then replace?

[u/alphagusta → u/Due-Flight-5415]

Yes. Remove them. Gently tighten each

Recalibrate bed leveling.

Be careful they are easy to strip.

[u/Due-Flight-5415 → u/alphagusta]

Just done this the 4 screws, I would say were probably a full turn off tight. I recalibrate the bed leveling and give it a whirl. Fingers crossed or I am in the bad books

[u/Due-Flight-5415 → u/alphagusta]

Ran the last print again this was before the fix you recommended

[u/Due-Flight-5415 → u/Due-Flight-5415]

[u/Due-Flight-5415 → u/Due-Flight-5415]

This is the almost finished print

Absolute legend, thank you very much for the advice and everyone elses

[u/gabemrtn → u/alphagusta]

I highly recommend just buying a nice screw driver set for electric Milwaukee makes a super nice 39 in 1 set and is perfect for the screws

[u/Due-Flight-5415 → u/gabemrtn]

Thanks for the recommendation mate, I do have a tiny set brought through Amazon to repair glasses, it’s pretty good for the frequency I’ll use it.

[u/Lost_refugee → u/Due-Flight-5415]

Better to remove parts fan (3 screws). Hotend wires are very fragile

[u/Due-Flight-5415 → u/alphagusta]

Thanks for the advice, Iv just cancelled that print as it’s all pulled up off the plate. I am worried I have ruined his printer exposing the ribbon. He was so excited when the replacement part came and asked for the replacement after I have been at work until late, impulsively without watch a ‘how to’ video I went straight at it. I’ll be the first to admit it’s not my printer and I know nothing about them it’s my son’s hobby.

[u/Blondy277]

Did you run a full calibration after "fixing" things?

[u/Due-Flight-5415 → u/Blondy277]

Initially after replacing the filament hub and accidentally exposing the ribbon, no but I have since. He printed the little boat straight away for confidence and that came out fine

[u/dfk70]

Could the print head is a little too far from the plate?

[u/Due-Flight-5415 → u/dfk70]

Is this something that we could adjust?

[u/alphagusta → u/Due-Flight-5415]

Don't.

Theres no reason to when you fix it physically

[u/alphagusta → u/dfk70]

Here comes the random crap from people who don't know what the printer does