A castle materializes out of thin air without hundreds of stone chiselers putting in decades of hard labor to make it happen. Is it the plot of a new Disney film?
Nope. It's what happened recently in Minnesota -- and the wizard who whipped up this magic castle was Andrey Rudenko, a contractor with a background in engineering.
Instead of using spells and potion to bring his castle into this world, Rudenko used something much more concrete. In fact, he actually used concrete extruded through a 3D printer he designed himself. Getting that concrete to the right consistency to be fed through the machine was quite a challenge Rudenko told CNET. "Although cement has existed for thousands of years," he said, "it hasn't been common to use cement mixes for low-speed precise extrusion. It took a lot of research and experimenting to come up with the proper mix. So the recipe is my own with common materials and some additives."
Rudenko's castle isn't quite big enough to house evil queens or hold royal balls, but the structure is quite impressive, measuring 10 by 16 feet with a height of 12 feet -- just think of the coolest castle playhouse you've ever seen. Then again, Rudenko's goal in creating the castle wasn't to make a livable structure. It was to act as a sort of proof of concept for the 3D printer and concrete extruding process he'd invented, so that he could move on to his real goal: printing an entire 3D house.
Related stories Giant 3D printer starts spitting out a house Girl wants a dragon, so scientists make one Is 3D printing the future of home building? "A new era of architecture is inevitable, and I'm excited to see where the next few years will lead in terms of construction and design," Rudenko says on his website. "I have previously been sure I could print homes, but having finished the castle, I now have proof that the technology is ready."
According to the site, Rudenko is currently refining his printer so that it will be up to the task. The current machine, which according to 3Dprint.com (which first reported Rudenko's plans back in April), is based on the RepRap project, an open-source 3D printer that, once made, can be modified extensively and even be used to reproduce itself. Rudenko says that the printer can pump out layers that are 10 millimeters in height by 30 millimeters in width but that "countless other options are available with just the click of a button."
