I wanted to have tops for the recently installed retaining wall posts to keep the grandkids safe, and whilst I could have bought some, where's the fun in that.
These work well for 100mm posts and now that I have the dimensions worked out, I may make some variations to hold solar lights etc

I printed 20 of them, thus the messy build plate in the bridging picture

Creality

Ender 3

No

No

0.2mm

none

I used Cura 5.2.1 with Adaptive layers and used bridging instead of supports - worked fine.

After printing, I sprayed silver to match the posts and also, to give it a bit of "sun screen".