filament sticking to nozzle/ first layer issue

[garp]

Hi guys,

I have an issue with my a10 printer for a couple of days now. My PLA is curling and sticking to the nozzle so my first layer won't print properly. It already starts when I am printing the first skirt line. A few days ago everything was fine and I did not do any changes since then. I already exchanged my nozzel and the tube but without any improvement. Now I am not sure if it really is a problem with the nozzle or sth else.

I'm using cura for slicing.
Material PLA 1.75
Layer height 0.3
Printing Temp 210°
Bed Temp 65°
first Layer speed 30mm/s
Retraction 25mm/s, Retraction Distance 4mm

My firmware is Marlin 1.19.

I'd be glad if you had any ideas! If you need more information pls let me know.
Thanks!

garp


https://ibb.co/rZcMJj3

[garp]

Thanks a lot for your reply vert!

I followed your advice and tried to readjust bed and gantry as well as axchanged the tube and pushed it in until stop.
Now my print has imrpoved a little but is still not back to normal.
The skirt and straight lines were printed better but when it came to support structures with every 180° turn the printed filament is dragged back form the bed and clogged to the nozzle.
I already leveled my bed three times and cleaned the nozzle again...not improvement

looks like this:
https://ibb.co/B2XG0L6
https://ibb.co/2snbxzn

Do you have any ideas?

Thanks
garp

[bta]

Try to clean the bed with isopropyl alcohol, or if you don't have it at hand wash it with soap or dishwashing detergent under hot water.

[garp]

Thanks for your reply bta!

Unfortunately I've cleaned bed and Nozzle right before the print.
For me as newbie it looks s like the filament is bending upwards towards the Nozzle. However as I made sure there is no filament stuck in the tube and the Nozzle itself is free I can't localize the reason for that...

Can there be any other reason?

I am thankful for any help!

garp

[garp]

I finally managed to get the printer working again.

I screwed off the whole heating block etc. once more, flashed the firmware with the 1.1.8 version and reinstalled Cura.

Actually still don't know where the problem was. I assume you are right with the levelling guess. Just happy it works again.

Thanks a lot for your help!!