The U.S. has added about 650,000 factory jobs since their numbers rebounded after the recession, putting manufacturing workers at 12.1 million and reversing a long decline in such jobs, reports The Wall Street Journal (May 30, 2014). But uneven growth has created regional disparities in the nation’s overall economic recovery.

Mobile, Alabama is among the winners. Shipbuilder Austral Ltd.’s facility here is busy seven days a week as workers piece together enormous aluminum sheets in a space the size of 13 football fields. Airbus and BAE Systems, too, are adding factory jobs here. Mobile created more manufacturing jobs than all but 15 U.S. counties in the past 4 years. U.S. factory-job gains—driven by a range of factors from cheaper domestic energy to the auto-industry recovery—have concentrated in pockets since the recession, particularly in the Southeast and Midwest.

Mobile’s success illustrates some common patterns: Often, companies have added jobs in states with “right-to-work” laws—which allow workers in unionized workplaces to opt out of paying union dues—and where taxes are relatively low, in counties where governments provide large incentives and strong vocational education, and in places with access to ports or other transport hubs.

Austal chose Mobile because of location, waterfront property, cooperative local and state governments, low taxes and low union membership. Alabama’s government sponsored training for Austal workers and built it a $12 million training center.

Airbus Americas, hiring about 1,000 new employees for its first U.S. commercial assembly plant, didn’t consider any Northern states as finalists, as it was looking for a port to which it could ship airplane parts for assembly. Alabama’s right-to-work rules were a key attraction. Alabama gave Airbus tax credits and cash grants valued at $158 million to build in Mobile—including a $6 million training center. “Alabama had it all,” says the Airbus chairman. “I’m not sure the rust-belt states have the same attitude.”

This post provided courtesy of Jay and Barry’s OM Blog at www.heizerrenderom.wordpress.com. Professors Jay Heizer and Barry Render are authors of Operations Management , the world’s top selling textbook in its field, published by Pearson.

Engineering companies now prefer to talk about “additive manufacturing” rather than “3D printing,” writes The Economist (May 3, 2014). One reason is that printing is not quite the right word for some of the technologies given this label. Whereas hobbyist-scale 3D printers typically build a product by squirting out drops of plastic, a newer manufacturing technique called selective laser melting zaps successive layers of powder with a laser or ion beam, hardening only certain bits. Larger firms want to stress the “manufacturing” aspect: that technology has moved beyond the development labs and is now being used on the factory floor to make complex metal parts. In Siemen’s gas turbines, for example, elaborately shaped blade components are hard to design and costly to make. But Siemens is using additive manufacturing machines to cut the cost and the time needed to replace the blades on customers’ turbines when they break– eventually from 44 weeks down to 4.

For simpler mechanical parts, the approach allows designers to imagine shapes that would be impossible to create through older techniques, besides greatly speeding up prototyping—for turbine blades and similar parts, from 16-20 weeks to just 48 hours, Siemens says. Additive manufacturing cuts the cost of tooling and materials: a piece can have all of its holes incorporated into it, with great precision, as it is built up from powder, instead of needing to have them expensively drilled afterwards. Siemens hopes to cut the cost of some parts by perhaps 30%.  As it gets easier to make low-volume, specialized parts in-house, Siemens gains bargaining-power when it comes to outsourcing such parts to other firms.

Aircraft engines, subject to even higher standards of reliability than turbines, are another area in which the engineering giants have implemented additive manufacturing. GE is using it to make fuel nozzles for its next-generation Leap engines. GE says the nozzles will be 25% lighter and five times more durable than their predecessors—and since there are 20 or so in each engine, the weight savings are significant.

This post provided courtesy of Jay and Barry’s OM Blog at www.heizerrenderom.wordpress.com. Professors Jay Heizer and Barry Render are authors of Operations Management , the world’s top selling textbook in its field, published by Pearson.