Bed adhesion problems

Hi All,
Here’s an update.
Just printed the original part that this post started with.
Smooth PEI plate
No Glue
Aux fan off
Chamber fan at 50%
Door and lid closed
Kept an eye on the chamber temp and didn’t go over 37c.
Build plate temp 55c
Nozzle temp 220c
Esun pla ss
5 % gyroid infill.
Print came out perfect so pleased with that however 5% isn’t strong enough the part has too much flex.
Next stop try with 15% infill and see how that goes.

For context here a picture of the part. It’s a base for a router for woodworking.


Really appreciate all the help you guys have given me.