Daniel Falck has over 25 years experience in manufacturing, machining, CAD, CAM, and computer programming. He has worked for Gibson Guitar doing design and prototyping for over 14 years. Currently, he runs the Prototype machine shop at King Cycle Group, in Portland, Oregon (USA), where bicycle components are manufactured. His home shop is full of CNC machining equipment that he uses to create guitar parts for customers, using open source software running on Linux. Over the past 10 years he has worked with open source manufacturing software such as Linuxcnc, APT360, HeeksCAD, FreeCAD, and a myriad of specialized python scripts. Brad Collette once designed software for a big company but doesn't like to remember that. These days, he is an entrepreneur, hobbyist, jack-of-all-trades, and a gentleman farmer. He is engaged in a multi-year project to raise two hacker sons. He has contributed to numerous open source projects and is an organizing member of Columbia Gadget Works, central Missouri's finest hackerspace.