the anvil roll as a fulcrum, into convolutions which, because of the entry angle of the strip, are helical. The resulting helical convolutions are joined at adjacent edges in a continuous seam by various means, such as a pair of lock up rolls positioned on opposite sides of the strip in line with the anvil roll which crimp preformed flanges on opposed longitudinal edges of the strip together in an interlocking relationship.
Three basic factors affect the diameter of the tubing made by such a three-roll machine: the width of the strip, the angle of entry of the strip through the rolls and the position of the pressure roll relative to the other two rolls. In operation, these three factors are held constant in an attempt to maintain the



In our series of interviews in the run up to Gnomon Workshop Live, the leading production designer, concept artist and matte painter tells us about his influences, his workflow – and why listening to metal can help your matte work.

Dylan Cole’s first love was comics, until an early encounter with the Art of Star Wars books turned his career onto a different path. After graduating from UCLA as a fine art major, he sent out portfolios to “dozens and dozens of studios”, eventually getting a call from legendary Illusion Arts co-founder Syd Dutton.

A short stint on The Time Machine was enough to launch his career, and within a year and a half of graduating from UCLA, he was off to New Zealand to be a senior matte painter