Beth, this is a very interesting approach. By replacing the print head with the cartfidge each time you essentially get a new print module. This should make it more eaisly maintainable. With this price point, it is going to get into more people's hands. Out school district recently bought a 3D printer and spent $35K. This would have been nice.
MIT students modified a 3D printer to enable it to print more than one object and print on top of existing printed objects. All of this was made possible by modifying a Solidoodle with a height measuring laser.
This Gadget Freak Review looks at a keyless Bluetooth padlock that works with your smartphone, along with a system that tracks your sleep behavior and wakes you at the perfect time in your sleep cycle to avoid morning grogginess.
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