Can not get bed adhesion after mega blob cleaned off

Bambu Lab A1 Series Troubleshooting
1

I had a mega blob, now I cannot get a first layer to stick. It seems to be an offset/bed leveling problem. Things I’ve tried:

  1. The cleaned off the entire blob, including removing the fans.
  2. Different nozzle.
  3. Cleaned plate then tried different build plate.
  4. Different filament.
  5. Retramming the bed.
  6. Tightening the hot end screws.
  7. Factory reset everything.

I’m at a complete loss, I can’t think of anything else to do. Cant print at all! Grateful for any ideas.

2

How about the generall temperature?
I had your problem and at the end i found out, that the roomtemperature changed a bit.
Before that i was printing at 20-21° roomtemperature, the problems began at 18° and i had to set the nozzletemperature a bit higher.
How did you cleaned your build plate?

3

I’m fairly new to Bambu but when I had problems with adhesion, I turned the first layer speed down to 7. It’s sloooow, granted, but it’s just the first part. May be worth a try.