This is an express design, based on a spiral lamp bulb that I made earlier.

One of the parts (ChrBulbExt.stl) has two versions - with and without supports.
Many users have had trouble printing โ ๏ธ this design, which is why this version with built-in supports is needed.

don't forget to enable "avoid crossing perimeters"
You can download it here :
https://makerworld.com/en/models/865471#profileId-816615