Rafts:
No
Supports:
Yes Snug or Grid Infill seems to work better.
I print this in the model direction.
https://cad.onshape.com/documents/9ca7ed30cc1ab4d30999303c/w/35439bba432545db00e9f7d5/e/a6f909d052778f4ecf03eb4d?renderMode=0&uiState=658570b0d9bbeb17a029d06d
The author marked this model as their own original creation.