Architects are using the latest in materials and construction methods to design ever more complex structures, and when those structures include walls of glass surfaces, someone has to keep all that glass clean. Now a London window cleaning company say they're designing their own custom tools to make the job faster and less dangerous. Spectrum Window Cleaning says their "reach and wash" systems can take care of business nearly 100 feet in the air, and they designed the tools with 3D printing. You can read the whole story here: http://3dprint.com/38610/cleaning-wi...-printed-tools