Watercooling PCs & modding computer cases?

I tried looking around a bit but couldn't find anyone that was interested in this. For me it had been on my radar for years through various forums, but I only built my first watercooled PC in 2020. For that I designed and manufactured my own case and now I am working on a second one! It's become a fun hobby that's taught me CAD and more about manufacturing in general.

So I was curious if anyone else is into the same thing here? It's probably a bit more niche than the mechanical keyboard thread I saw!