Aug 05, 2021 · Wire EDM at Graphel. Written by Graphel on August 5, 2021. Posted in Uncategorized. In the following video from Graphel Carbon Products, Ken Dworznik and Bill Heyser discuss Graphel’s Wire Edm Capabilities, the advantages of working with Graphel for Wire EDM projects, and Bill’s observations on advancements in the EDM industry. YouTube.