Warpfix

Hi!
I don't know how to fix this warping! So frustrated! I'm also a newbie so I'm sure there is a simple way :)
I have designed a fillerholder that consists of two separate parts holding together by two bearings.
The sides warps upwards when printing.
The first layer fits well to the bed but after a few layers 5-6 I can see the corners staring to bend upwards.

My printer: Anet a8
Material: PLA 1.75

Cura settings:
Layer Height: 0.2
Wall Thickness: 0.8
Printing temp:200
Plate temp: 50
nozzel: 1.75

Printspeed 60mm/s
Outer wallspeed 30mm/s
Initial layer speed: 20mm/s

Any suggestions?

Attachment 10785
Attachment 10786
Attachment 10787

/Charlie

Thanks!
I tought a brim was only needed for very small objects that don't have a lot of contact with the board. Enabled brim and the pice came out perfect!
Problem solved! :)