I have provided the file with a circular cut out, as well as the original to allow you to cut out whatever side you need.
You can watch a video on my process here:
https://www.youtube.com/watch?v=6Ndz4DMhJ2c&feature=youtu.be
Printer Brand:
LulzBot
Printer:
TAZ 6
Rafts:
Doesn't Matter
Supports:
Yes
Resolution:
1.4 but try smaller