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Open-source 3D Printed Pipe Fittings Reduce Water Waste, New Study Argues
(3dprintingindustry.com)
this post was submitted on 26 Feb 2025
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I don't disagree with the need for local, on-demand production for some oddball parts in some cases, but I do think that 3d printing is the wrong technology for it in this case
This seems like a perfect use for some sort of CNC lathe to me. Pipes are cylinders, and lathes are pretty much the perfect tool to create cylindrical objects. Chuck a piece of metal (or whatever material you need to make the part out of), turn it down to the correct inner and outer diameters, cut the right threads on either end, and you're good to go. Need to be able to pet a wrench on it? Start with hex stock.
I'd have a lot more confidence that a part isn't going to start leaking if it's carved out of a solid piece of material than if it's made out of many layers of material deposited on top of each other.
The only thing a lathe would struggle with is things like elbows and tees, but with a little know-how you can get around that by just making adapters to more readily available standard elbows and such, using flexible tubing, tube benders, etc.
The idea of 3d printing these parts really feels like a "when all you have is a hammer everything looks like a nail" situation.
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.