A recent article points out that Dutch architectural firm, DAS, has built a 3-D Printer, encased in a somewhat portable tower, with the aim of 3-D printing canal houses. The printer uses the FDM process to extrude plastic material, forming building blocks for constructing the buildings. They claim that they will be opening the “World’s First 3-D Printed building, but they say it will take three years. The printer is in place as of last week, so the countdown has begun.