This vase is for flowers in test tubes.
You can see the making-of video on my Instagram channel here:
https://www.instagram.com/reel/CtWexyYtGjw/?igshid=MzRlODBiNWFlZA==

I bought the test tubes from Amazon in the size: 160 x Ø 18mm.
Here is the link to the test tubes from Amazon:
https://www.amazon.de/dp/B07FMRJ3CR?ref=ppx_yo2ov_dt_b_product_details&th=1

In addition, I have also created my own construction of a test tube in the size for the vase.
the construction of the test tube is designed in a way that it can be printed without support material if the model is placed on the print bed with the opening at the bottom.

The print does not need any special settings.
You don't need any support material either.
Although it gets very fine at the top, I also made a clean print with a 0.4 mm nozzle.
With a 0.2 mm nozzle, the result will be slightly better in the fine areas.

Print Settings

Printer:

Bambulab X1C

Rafts:

No

Supports:

No

Resolution:

0.200

Infill:

15%

Filament: Bambulab PLA