Hey folks,
I've lately been using DESIGN MAGIC and KIT OPS in Blender to do some 3D print modeling and I find that I often need to swap back and forth between smooth shading and flat shading-- and what a pain it is. You have to add modifiers and settings, and if you use a Spin or Skin modifier, there are also smooth/flat settings in there too.
So, I decided to sit down and write a simple addon that resides in the Tool menu and simply toggles all selected objects between Smooth and Flat shading. Even works on the modifiers Skin and Spin. Also has key shortcuts:
Make Flat
Shortcut: shift+ctrl+alt+F
Make Smooth
Shortcut: shift+ctrl+alt+S
You can download it here: https://filedn.com/lLMW4jXsJqxXkRYjd1UCoKL/3d/toggle-flat.zip