While the cost of 3D printers are coming down, it's unlikely we'll start to see them invade everyone's homes 'til they become much cheaper. That's the idea, at least, behind the Peachy Printer, a device that's promising to retail for less than $100. Unlike printers made by companies such as Makerbot, Peachy uses a laser to set objects from liquid resin. The laser is guided by a pair of mirrors that take instructions from your PC's audio in / out ports, and the system even allows you to scan objects wit
