This is just a simple pipe corner I designed in TinkerCAD for a project I'm working on.
20mm pipe with 3mm walls. widest part of pipe is 25mm.
Pipe shape generator by "this tinkerer". Thanks!
I used a brim to help with the minimal first layer surface area.
Supports from bed only.
Infill to suit your project. Mines pretty solid at 25% but has some give when pressed hard with thumb.
Printed using Copper PLA.