This pen, or anything else, cup has a large side and a small side.
It can be printed in vase mode, or spiralize outer contour in cura, or printed in normal mode. The photo shows the vase printed with 2 walls in normal mode. You can uncheck spiralize outer contour to print in normal mode, set top layers to 0, set infill to 0%. Bottom layers set to 3 or more. Set walls to 1 or 2 or more for a more sturdy vase if not in vase mode. Can be scaled to fit your needs. The vase in the photo shows vase not scaled at 100% of the stl file at 102mm wide for X and Y is 120mm and Z is 110mm tall. It has not been tested for being watertight and probably isn't printed in vase mode. If you make it, please post a photo, I'd like to see your print!

All my designs have a copyright, you may not download and sell them.

Tips are appreciated!

Enjoy...