VFD Compact Clock (design concept)

VFD Compact Clock design concept

These VFD (vacuum fluorescent display) tubes has outer diameter of 11mm and digits has a size of 6 by 9mm.
Board has size of approx. 112x28 mm.

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Some tech details about tools:
Paint.NET 3.5.10: minimal postwork on some pixels and final image composing
Blender 2.69: modeling and UV mapping separate parts and entire device
Octane Render 2.23.2: materials setup and rendering (HDRI lighting; pt mode with maxdepth=16/16; 8000spp)