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82 DESIGN007 MAGAZINE I JUNE 2023 The industry lost one of the good ones when Martin Cotton passed away. Martin not only spent 50 years on the cutting edge of PCB design, he was also, as the axiom goes, "a real character." Everyone who knew Martin has a favorite story about him. He was just a hell of a guy. Doug Sober helped pioneer the development of IPC's first slash sheets in 1996 for IPC-4101, Specification for Base Materials for Rigid and Multilayer Printed Boards and we asked him to discuss slash sheets—what they are, what they are not, and why PCB designers might benefit from an IPC materials guide developed specifically for designers. Columnist Kelly Dack has had a pretty wide range of experiences. As a PCB designer, he has sat behind the desk at an NPI company, an OEM, a fabricator, and now an EMS provider. We asked him to share a few thoughts on the materials selection process and how it could be improved. I recently spoke with Fabian Winkler, product marketing manager for Altium 365. He and guest speaker Casey Sirotnak of Forrester co-hosted a free webinar on May 17 titled "Unveil the Total Economic Impact of Altium 365." Fabian dis- cussed the focus of the webinar and some of the benefits of this environment that allows ECAD and MCAD engineers to collaborate seamlessly. TOP TEN Slash Sheets and Material Selection Stop Over-specifying Your Materials Guru & Geezer: A Celebration of the Life of Martin Cotton EDITOR'S PICKS May 17 Webinar: The Economic Impact of Altium 365

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