Roger is a physicist with a PhD in materials science and an MBA. Most of his career has been spent developing new ways to manufacture things using joining and assembly technology. This has included laser welding of clothing, welding plastics to metals, and even welding pasta, and glass. He has written a bestselling book on welding plastic (as ideal Christmas present). He was also an Associate Director of TWI where he ran the Advanced Materials and Processes group for 7 years, driving it to profitability and growing it to a team of 50 people. When not welding, he spent 3 years as engineering director of a VC funded start up developing novel ceramic antennas for the telecoms industry. In his spare time, Roger enjoys keeping fit by running and cycling, as well as river fishing for perch and tench.