

I agree wholeheartedly. But replacing all of the piping will be very expensive. I think this is more geared towards the people who don’t have the kind of money or expertise or both to replace their entire plumbing and this will help mitigate those issues by being able to connect weird sizes together. That’s at least what I got from scanning the article.
CNC/lathe work is harder since it requires specialised machines which are a magnitude more expensive than a 3D printer. The method developed allows for low cost fixes to reduce the water leakage globally. Albeit maybe less reliable or permanent.