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Years ago, when I worked in New York City, I bought a Sony Walkman for my daily commute. It was cutting edge technology and I was an early adopter. I imagined that I looked pretty cool, listening to tunes I organized myself on a mix tape. Fast forward to today, where music is everywhere, on every conceivable device.

Manufacturing Engineering asked thought leaders at five companies for their views on challenges and trends facing the metalworking industry.

There have been many process improvement trends in manufacturing over the decades, and none have had more significant ROI than machine monitoring. The increase in machine monitoring is owed in large part to the rise in popularity of the open and royalty-free interconnectivity standard MTConnect.

NASA's John Vickers describes how advanced manufacturing is affecting aerospace.

Additive will provide a simpler, more responsive supply chain for high-value parts, according to Velo3D CEO Benny Buller.

Applications and new players are on the rise, but challenges remain—including financial concerns.

From Copper to Filaments, engineers are developing new materials for 3D printing, advancing its practical use. In February, Markforged, Watertown, Mass., commercialized a pure copper filament for its printers so they can use this hard-to-machine metal.

The history of cutting tools goes back a ways—a long, long way. Our prehistoric ancestors were pretty good at making stone tools, and the technology has improved from there. I saw how much on a February visit to the Deutsches Museum in Munich, which has an exhibit on the history of machining.

On May 9, I took a whirlwind tour of change in manufacturing by visiting several open house events. First up was BIG Kaiser Precision Tooling Inc. in Hoffman Estates, IL, where Matt Tegelman, applications manager and product manager Kaiser, talked about the Industrial Internet of Things.

Fluence Analytics (formerly Advanced Polymer Monitoring Technologies), a manufacturer of smart industrial and laboratory monitoring systems, recently released the third generation of its ACOMP, an automated system that performs continuous, real-time monitoring and characterization of polymers for 3D printing and other uses during manufacturing and post-processing.