What is How do I setup a normals 3D model without math?

You can set up normals for a 3D model without math using 3D software with visual, automated tools (like auto-smooth, soft/hard edges, or normal map baking) that handle calculations for you. These tools let you adjust normals via clicking, painting, or presets—Blender’s Auto Smooth fixes flat-looking faces, while Substance Painter bakes detailed normals from high-poly to low-poly models without equations. If you’re new, start with Blender’s “Auto Smooth” (in Object Data Properties) or a free normal map baker—both let you tweak normals visually with no math needed.