Hi Guys

Sorry for raising a common problem.

I browsed the entire internet and can't find the answer

Im printing a box on a Creator pro

Corners are lifting whatever I do

The most popular advises are

1. Use heated build plate - Heated
2. Level the build plate - its levelled perfectly. It sticks. First layer is great. Wrapping starts after 20th layer. Before it looks ideal.
3. Reduce infill - 15%
4. Avoid ABS - tried PETG. Bit better but still bad.
5. Use cover - done
6. Incorrect temperature - tried the full range of temps for ABS and PETG - no difference.

Any reasonable suggestions except using a brim Oklahoma-wide and nail it to the build plate please?

Many thanks