What happens when you take a solid metal sphere and transform it into a razor-sharp weapon? Watch as master blacksmiths take on this insane challenge, forging an epic knife from a seemingly impossible ...

New York University. "Corn starch solution can help shape solid materials." ScienceDaily. ScienceDaily, 4 November 2010. <www.sciencedaily.com / releases / 2010 / 11 / 101104101701.htm>.

Available from just $28 or roughly £21 worldwide shipping is expected to take place during July 2019. Watch the video below to learn more about the unique shape which can roll without being a sphere.