for the fastest coin roll and for the fastest multi-coin roll, set in 2005 and 2012.
Rolling or walking coins over the backs of the fingers is known as the coin roll, knuckle roll or the steeple chase and is probably the world's most well known coin 'flourish', it can be performed with coins of any size or with poker chips.
David also holds a Guinness World Record, set in 2012, for the fastest classic two balloon flower...
and was part of the team creating the Guinness World Record Breaking balloon fractal (a Sierpinski Tetrahedron)
(as seen in Gallery 4)
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