mesh - Texture problem two sides of a face after a solidify - Blender Stack Exchange
Daily Blender Tip 350: Double-sided materials - BlenderNation
How to add Blender 2 sided material to one mesh - cgian.com
materials - How to set different colors to each side of plane - Blender Stack Exchange
Is it better to have models that have double faces or is it better to have a two-sided material instead? - Pipeline & Plugins - Epic Developer Community Forums