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Clockwise from top: Anthropologie Scrimshaw Knob $48, anthropologie.com Fusion Hardware Victorian Violet Knob $109, fusionhardware.com Out of the Blue Studio Green Spiral Knob $288, outofthebluedesignstudio.com Emtek Dog Knob $106, emtek.com Tracy Glover Prospect Hill Knob $160, tracygloverstudio.com Nostalgic Warehouse Newport Knob $150, nostalgicwarehouse.com Acorn Iron Art Knob $235, acornmfg.com Taamba K1 Knob $155, taamba.com This hardware begs to be touched beyond just opening your door. Constantly handled yet oft ignored, doorknobs spent decades in need of an upgrade, after a scarcity of brass during the Great Depression and World War II left the market full of bare, skeletal designs.

Yesterday we heard about the Open Compute Project. Facebook's director of hardware design, Frank Frankovsky, tells us about part two of the social network’s plan to spur suppliers to build the products it needs.