If you want to see my best projects, I invite you here: 

https://cults3d.com/en/users/Guliwer06/3d-models

Inner diameter = 6cm

Rectangle = 2.3cm X 6.3cm

Print Settings

Printer Brand:

Creality

Printer: 

Ender-3 S1

Rafts:

Doesn't Matter

Supports: 

No

Resolution:

0.2

Infill: 

100%

Filament: Colorfil PLA Black

Category: Parts