If you follow the world of 3D printed puzzles closely, then you may already know that the Guinness World Record for the world's largest workable puzzle has been broken. This year, a 3D designer named 'corenpuzzle' has documented his successful effort to design and 3D print a 22 x 22 Rubik's Cube. This eight-month-long effort had some initial problems twisting, due to the lack of a strong puzzle core. But now that those kinks have been worked out, the new World Record holder, corenpuzzle, can feel very proud. 694 people have already downloaded the puzzle files from Thingiverse, so we'll definitely be seeing more of these large 3D printed Rubik's-style Cubes around! Read more at 3DPrint.com.