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Peter Zelinski

Peter Zelinski has been a writer and editor for Modern Machine Shop for more than a decade. One of the aspects of this work that he enjoys the most is visiting machining facilities to learn about the manufacturing technology, systems and strategies they have adopted, and the successes they’ve realized as a result. Pete earned his degree in mechanical engineering from the University of Cincinnati, and he first learned about machining by running and programming machine tools in a metalworking laboratory within GE Aircraft Engines. Follow Pete on Twitter at Z_Axis_MMS.

Posted by: Peter Zelinski 27. February 2014

Lights-Out Machining and Long-Term Agreements Go Together

Seen here is the raw stock for a cylindrical part that would typically be machined on a lathe. Vanderhorst Brothers runs it on a machining center so that the job can be queued within the pallet system for lights-out machining. The part is held by a dovetail fixture that this shop helped to invent.​

Brian O’Rell, president of Vanderhorst Brothers Inc. of Simi Valley, Calif., says one of the keys to his shop’s success can be expressed in three letters: LTA.

LTAs—long term agreements—are so valuable to this machine shop that he is willing to invest considerable time and care in looking for cost reductions he can justify for the sake of quoting attractive prices to customers seeking to enter into an LTA contract.

The value of a contractual agreement to keep on supplying the same part number to a customer is even greater than many shops realize, he says. True, the programming and process engineering all can be performed just one time, and amortized over the cost of the job. That is a real source of savings. But it is also true that the amount of quoting and prospecting that Mr. O’Rell has to do is reduced as long as he has enough LTA work to keep the shop busy.  He is happy to pass along this source of savings as well.

Another benefit is this: After the term of an LTA ends, the shop that has been doing the work for all of that time is in the best position to win the work again when a new LTA is signed. Today’s contractual customers will be the shop’s best prospects tomorrow.

Vanderhorst Brothers has invested significantly in lights-out machining using machining centers fed by pallet systems. The shop has realized unattended production to an extent that now goes beyond even what we reported on in this article. The shop runs just one staffed shift, routinely using most of the remaining hours in the day to run jobs that were queued up while employees were in the building.

Lights-out machining and LTAs go together, says Mr. O’Rell, because the evening hours are cheaper than the hours when employees are present. He therefore gives the benefit of this economy to his contractual customers by running LTA jobs through the night.

Posted by: Peter Zelinski 24. February 2014

Video: Who Is to Blame?

Jeremy Bout of the Edge Factor created this short video exploring the question of who is to blame for the current lack of skilled talent in manufacturing. The point of the video: Maybe who is to blame is now beside the point.

The Edge Factor’s latest project is “LaunchPoint,” a TV series telling stories of men and women who work in manufacturing.

Posted by: Peter Zelinski 18. February 2014

Funding Training is Worth the Risk

Apprenticeship 2000 is a program in which several North Carolina manufacturers cooperate to fund college instruction and provide paid on-the-job training for students pursuing careers in manufacturing. In this video, Ralph Daetwyler, president of the Max Daetwyler Corporation in Huntersville, North Carolina, points out that his company and other partners in the program spend up to $150,000 per student to provide that opportunity, without requiring students to sign any agreement to stay. What if the students take the training and leave? Mr. Daetwyler’s response is, “Then we weren’t a good employer.” A response I would add is that the shared effort of various companies adding talent to a common local labor pool makes the overall region healthier for manufacturing, so the investment still delivers value. I believe regional alliances such as this one (here is another) are the best means of addressing the current lack of skilled manufacturing employees.

Posted by: Peter Zelinski 14. February 2014

Video: Additive Manufacturing in Extreme Application

This video shows NASA’s test of a rocket engine fuel injector made through selective laser melting, an additive manufacturing process. The part in this test withstood 1,400 pounds per square inch of pressure at nearly 6,000°F, and performed "flawlessly," according to NASA. Because of additive manufacturing’s freedom to produce complex geometries, the injector was made in just two pieces, where a previous injector design was an assembly consisting of 115 pieces. The additively produced injector in this test was made by Directed Manufacturing, a Texas additive manufacturing specialist we’ve written about

Posted by: Peter Zelinski 11. February 2014

On Pinterest: Design for Additive Manufacturing

Arguably the most important thing to know about additive manufacturing is that it changes the rules of design. Previously unmanufacturable features become easy to produce with additive technology. Taking full advantage of additive manufacturing therefore involves redesigning components or even redesigning entire assemblies to realize the improved functionality that additive manufacturing permits.

Some of the most elegantly functional designs occur in nature. That is one clear impression that comes across from this Pinterest board devoted to design for additive manufacturing.

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