ProDo
Removed additional material and flattened it. reduced print time by ~6 minutes on the full cut version.
Prints in ~14 minutes.
The center cut remix you might be able to stack print them as the ridges are removed.
Prints in ~16 minutes.
This is a remix of the below design.
https://3dprint.nih.gov/discover/3dpx-013410
https://www.thingiverse.com/thing:4249113/files