15x15 mm junction 3 axis for square round tubes M5

thingiverse

Print a 15x15 mm system for square round tubes easily with materials from any DIY store. The inner dimensions measure exactly 15.5 by 15.5 mm, while an M5 nut is used to secure them. Due to their compact internal design, these systems require careful assembly, ensuring the nuts fit internally and securely without straining or compromising the entire structure. Designed for effortless 3D printing, this system boasts remarkable stability with just a thin shell of 0.8 mm thickness. Achieving optimal performance calls for moderate filling at around 25%. The key to durability lies not in the printing material itself, but rather how effectively it is bonded and supported. Therefore, tighten the screws only a little to avoid placing too much pressure on an aluminum hollow section profile, which remains the most vulnerable part of the overall system.