Huge Rubik Cubes

YongJun MoYu 13 Layer, made in China, 2015.
(plastic, 5+1/4", over 1000 pieces, weighs 5+1/3 pounds)

This cube goes improves the 11x11x11 design with extra tabs on the ends of some pieces. Tony Fisher does an impressive job in a video showing a complete disassembly of the cube, and a second video showing a reassembly; he identifies 38 piece classes.

Even larger Rubik's cubes have been custom made with 3D printing. In February 2011 Oskar Van Deventer presented a Rubik 17x17x17 cube called "Over The Top" (using Shapeways 3D printing technology). In 2016 Coren Puzzle made a 22x22x22 cube and in 2017 Grégoire Pfennig demonstrated this 33x33x33 cube:



Further Reading
Tony Fisher Disassemble,, from: https://www.youtube.com/watch?v=JlbsR--UVf8
Tony Fisher Reassemble,, from: https://www.youtube.com/watch?v=xP8AdF8Tl-w
Deventer presentation February 2011, from:
http://twistypuzzles.com/articles/building-17x17x17/building-17x17x17.pdf
Shapeways Page, from: http://www.shapeways.com
Rubik 17x17x17 Video, from: http://www.youtube.com/watch?v=ihWyzvOM9pk
Rubik 17x17x17 Disassembly Video, from:
http://www.youtube.com/user/OskarPuzzle?blend=2&ob=1#p/u/2/CBY7JRh2YOo
Ruwix Page about the 22x22x22 cube, from:
https://ruwix.com/the-worlds-largest-cubic-nxnxn-rubiks-cube-puzzle-22x22x22
Ruwix Page about the 33x33x33 cube,, from: https://ruwix.com/33x33x33-rubiks-cube
Greg's 33x33x33 video,, from: https://www.youtube.com/user/RubixFreakGreg