MakerBeam

https://www.kickstarter.com/projects/mnemnion/makerbeam-an-open-source-building-kit

10x10x100mm Black Anodized Aluminium

10x10x100mm Clear Anodized Aluminium

Simple Cycles shaders nodes used(slightly modified):
http://blender.stackexchange.com/questions/9330/how-can-i-make-a-glossy-finish-and-an-anodized-finish-rough-but-shiny-finish

Blender file uses metric scale, but it is probably easier to scale it up a 100 times and use blender units.