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What 19th-century factories tell us about 3D printing

In the late 19th and early 20th centuries, factory electrification initially showed little promise. Suddenly, in the 1920s, it revolutionized manufacturing. The experience of factories at the turn of the century provides a lesson for modern manufacturing leaders looking to introduce new technologies like 3D printing.
Jon Bruner
Formlabs

This article, appears in the new Digital Factory Report, a broad look at how new technologies are transforming the way products are developed, designed, made, and sold. Download the Digital Factory Report for free.

As electrification swept through factories in the late 19th century, managers anticipated significant gains in productivity; it seemed obvious that replacing steam engines and waterwheels with modern electric motors would make factories more efficient, but those gains didn’t materialize immediately. It took nearly 40 years—until the early 1920s—before the fruit of electrification appeared in productivity measures.

The problem, described by the Stanford University economist Paul David in his classic 1990 paper, “The Dynamo and the Computer,” was that 19th-century managers barely reconfigured their factories; they simply joined electric motors to existing systems, which relied on rotating line-drive shafts, pulleys, and belts to power machines. Electric motors may have been somewhat more efficient than the older power sources they replaced, but they didn’t lead to a remarkable transformation in factory economics.

Lathes in a machine shop next to an image of an old factory.
Left: The lathes in this machine shop are powered by belts connected to rotating shafts that run along the ceiling. Line-drive shafts connected every machine to a unified power source, usually a steam engine or waterwheel. Right: Drive shafts were inflexible, dangerous, and inefficient: because power dissipated quickly over distance, factories needed to be compact and often rose to many stories in order to keep machines close to power sources, like these textile mills in Lawrence, Mass. (Images: Lathes.co.uk, Library of Congress)

That transformation eventually arrived in the next generation of factories during the 1910s and 1920s, when managers took advantage of the flexibility and scalability of electric drive, placing motors in individual machines rather than simply connecting them centrally to line-drive systems.

The result was a radical reconfiguration of manufacturing. Factories could be organized around the flow of parts and labor without being constrained by the flow of mechanical power transmission; different divisions within factories could operate independently as demand required; and factories could be reconfigured easily as market conditions and product requirements evolved. The modern factory was born.

A machine shop in a Ford bomber plant during the Second World War and a 1938 Dodge plant
The modern factory was born during this transition to individually-powered machines. Without line-drive shafts, factories could support high ceilings, flexible layouts, ample light, and much safer work environments. And, without the need to transmit power mechanically, they could reach scales that would have been impossible to serve with rotating shafts. Left: A machine shop in a Ford bomber plant during the Second World War. Right: A 1938 Dodge plant designed by Albert Kahn. (Images: Library of Congress, Canadian Centre for Architecture)

Manufacturing executives today stand at the edge of a similar transition. A wide variety of digital technologies, including 3D printing, artificial intelligence, connected machinery, and industrial robotics, promise to reorder manufacturing at every level from product ideation and prototyping through production, distribution, and aftermarket service. Taken individually, these technologies can replace legacy processes with some marginal benefit. But, reading from the experience of the early 20th century, the big returns will go to managers who are willing to reinvent their entire businesses to take advantage of new technologies.

The returns to this digital transformation include:

  • Rapid, flexible product development that makes it possible to improve customer experience and meet market requirements quickly and precisely
  • New business models, such as mass customization, connected intelligence, and product-as-a-service
  • Lower fixed costs required for product introductions, and reduced risk related to new products
  • Managerial agility and operational efficiency

Digitization has already reconfigured the communication, entertainment, advertising, and finance industries—fields where the core asset is some form of information, easily transmitted across the internet. The retail industry is going through its transformation now, as Amazon bridges the digital and physical worlds with a profoundly efficient combination of software, intelligent logistical networks, and two-sided marketplaces.

Manufacturing is next. Connected machinery, additive manufacturing and next-generation industrial robotics turn software and data into crucial drivers of value for manufacturers. Industrial firms that understand new digital business models will thrive, while those that don’t will be left behind.

The Digital Factory Report aims to present a coherent vision for how additive manufacturing, artificial intelligence, and machine data will transform manufacturing. In the chapters that follow, we summarize those technological advances and addresses the impacts they are likely to have—not just on manufacturing itself, but on the entire product lifecycle, whose stages from initial design through aftermarket service are becoming increasingly integrated through software.

Each of these technologies is transformational in itself, and combined they represent a new industrial revolution. Like the managers who reinvented their factories through electrification, today’s managers need to understand the foundational possibilities of these technologies in order to thrive.

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