Model:

This 3D printed pen body is designed to fit standard pen refills and features an ergonomic cut for comfort while also providing a clean, modern aesthetic. 

Printing:

Due to differences in 3D printers and settings, the fit may vary, and some modifications in your slicer (such as scaling or tolerance adjustments) might be required for the best result.

My print setting:
-material: PLA
-infill: 15%
-support: no
-brim: no
-print time: 22min
-filament used: 9g