A guide for using the translucent blend mode to create transparent Materials in Unreal Engine.
Transparency — Blender Manual
Opacity (optics) - Wikipedia
texturing - Setting up a metallic foil overlay with transparency using materials and textures - Blender Stack Exchange
Using Fresnel in Your Materials
Material Blend Modes in Unreal Engine
Unreal Engine Material Properties
Light-matter interaction can turn opaque materials transparent
Transparency — Blender Manual
Using Subsurface Scattering
Material Inputs in Unreal Engine
PDF) Light-matter interaction can turn opaque materials transparent
Transparent material appears black when using lightmap - Questions - Babylon.js
Why Use Translucent Polycarbonate on Building Facades?