Most "bed adhesion" problems on hobby FDM printers are not the bed.

They are a cold first layer, a dirty sheet, or a Z offset that is 0.05mm off and nobody measured it. The skirt looks like spaghetti, the print still runs, and 40 minutes later you have a doorstop.

Stop the print. Do not let it fail in the middle so you can say you tried.

Checklist I run before any functional part or yard prop:

1. Wash the sheet. IPA is not soap. Finger grease is the usual culprit.

2. First-layer speed under 30mm/s. High-speed profiles do not get a pass on layer 0.

3. Baby-step Z while the skirt is down. If you can peel the skirt in one piece and it still sticks, you are close.

4. Clogs after 20 minutes are usually heat creep or wet filament, not a cursed nozzle.

Files and live repair are different jobs. Mixing them is how you end up with a folder of STLs and a printer that will not finish a skirt.