15x15 mm connector 3x - system for square round profil slim version

thingiverse

Inside Dimension = 24x24x26 mm square block, perfectly captured within a single, sturdy print.\nThe Outside Dimension expands to 15.5 * 15.5 mm.\nThe small but robust M5 Nut threads neatly internally.\nWith minimal adjustments, easily printed components bring precision engineering within reach.\nWhen designing hollow aluminum profiles, use a 25% fill and a delicate 0.8 mm shell.\nFor more solid builds or steel alloys, you can confidently increase the material.\nAssemble securely by applying only a gentle, smooth torque to the screw.