Normal Map Creation in Blender

From Valve Developer Community

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Creating normal maps in Blender is possible. Until a complete tutorial is created here, it is recommended that you use the following link to understand the basic information.

blender.org - Normal Maps (http://www.blender.org/development/release-logs/blender-236/normal-maps/)

To do: Add a complete, Source-relevant tutorial for creating normal maps in Blender