I am working hard to experiment with my printer and I am very slow to develop my own designs, so I find Thingiverse website easy to find a collection of prints.
For the print I used an 8mm 'Brim' to help adhere the base to the build plate. The rounded corners could cause some difficulty and possible lift. Noting the print would take 11 hrs, I decided not to waste my time and chose this option.
The print came up in high quality.
This is not my design I got it from:www.thingiverse.com/thing:2023951