Silwa & Graham as AMUG Technical Competition winners

AMUG Technical Competition winners: (left) Andrew Sliwa’s Pretorian Guard helmet and (right) Ed Graham’s carpet loom drive assembly (original assembly on left)

The Additive Manufacturing Users Group (AMUG) has announced the winners of its annual Technical Competition, which was held during the group’s 30th annual conference in St. Louis, Missouri. A panel of industry veterans selected Andrew Sliwa of Custom Prototypes and Ed Graham of ProtoCam as winners of the competition.

Andrew Sliwa’s winning entry in the Advanced Finishing category was a stunning recreation of a Praetorian Guard helmet that Cleopatra gave to Mark Antony. Sliwa’s team built on research to create a digital model that fueled metal and polymer additive manufacturing processes. The metal pieces were painstakingly polished and plated in copper, nickel and gold. The jewels, which were printed in clear photopolymer, were dyed and painted to present the grains of precious stones.

Ed Graham’s winning entry in the Advanced Concepts category was titled “Old world engineering gets and additive makeover.” Graham’s team applied DFAM (design for additive manufacturing) practices to reduce weight and replicate 1,000 pilot holes while creating a modular assembly that allows replacement of individual components.