The cover story of Wired Magazine this month is titled “How to Make Stuff.” The article refers to the fast-growing Do-It-Yourself (DIY) community of hobbyists which build electronics using open source hardware designs. I first learned of this concept about two years ago when reading Chris Anderson’s book Free. Since Chris is the Editor-in-Chief of Wired, I was not surprised to see the topic featured on the cover. The open source hardware market is growing quickly. Insiders predict it will reach $1B by the year 2015. But what are the implications for proprietary hardware manufacturers (i.e. the closed source community)?