Uneven print over the printing area
I'm a newbie , have been printing on MKS 3i for about 4 months, mainly PLA,
recently I started having problems with product not sticking to surface and other issues.
today I calibrated it for the first time, wasn't that scary as I expected,
lowered the nozzle until I got what I though is a good even surface.
sent a print that is flat , covers the whole center of the printing surface and noticed the brim is uneven ,
as if the printing surface is not flat,
see image.
I suspect your filament is damp, look up threads here about drying it.
Four months ...?
Have you done any basic maintenance?
https://help.prusa3d.com/en/article/i3-printers-regular-maintenance_2072
Then please run a first layer Z configuration and show us the print *on the print sheet*.
Cheerio,