Learning about development and contraction made me regard slots, slip joints
https://storage.googleapis.com/metal-craftsmanship/serving-home-owners/uncategorized/breathing-easy-for-a-century-custom-made-copper-roofing-system-vents-that-keep.html
Finding out about development and tightening made me respect ports, slip joints, and expose lines; clever detailing turns thermal activity right into deliberate aesthetic rhythm.