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Home » 3D printing your next car

3D printing your next car

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3D printing your car

Your next car may be produced in a 3D printer instead of on an assembly line. Auto makers use 3D printers to create prototype parts. Now, entire vehicles can be produced by 3D printing.

The first 3D printed car was actually printed during a recent technology show, assembled, and driven away, while attendees watched.

Since being introduced at the International Manufacturing Technology Show in Chicago last year,  the Strati, shown here, has been on a fast-paced national personal appearance tour, demonstrating its promise of redesigning how cars are developed, sold, built and even recycled.

The Strati was winner of a design challenge by Phoenix-based Local Motors, which drew 200 entries from designers in more than 30 countries. The winning design was 3D printed in just 44 hours by a process called DDM, or direct digital manufacturing. It is the first time the cutting edge method has been used to 3D print a working vehicle.

3D printing your car

By comparison, “regular” 3D printing takes much longer. On a recent visit to the Ford Rapid Prototype Lab inside the company’s huge River Rouge complex in Dearborn recently, I learned it can require as many as 800,000 microscopic layers of composite and 36 hours to 3D print an engine block. The Strati has just 212 layers.

Ford and other auto manufacturers are using 3D printing to replace wood and clay models during the design stage. But whichever method of 3D printing is used, designers and engineers still begin with 2D paper sketches or a computer graphic that mimics 3D.

The Local Motors design challenge and 3D printing was in cooperation with the Oak Ridge National Laboratory and other corporate sponsors, on a special machine from tool maker Cincinnati Inc. Like other models entered in the competition, it was designed for urban transportation.

Thee scientists and engineers at Oak Ridge also have created a 3D printed version of a classic Shelby Cobra, as a laboratory on wheels.

The Strati is a two-passenger roadster looks a bit like a futuristic upscale dune buggy. It’s made from ABS thermoplastic reinforced with carbon fiber, which makes it about one third the weight of a vehicle of similar size, such as a convertible version of a Chevrolet Spark or Honda Fit.

When it goes on sale, hopefully by the end of 2015, pricing is expected to be around $14,000, similar to an entry-level Spark or Fit.

Local Motors 3D printed car

The Strati, like the 199 other competition entries, is not all 3D printing. Tires, in this case Bridgestone Battlax motorcycle tires, suspension, windshield, wiring and engine, are conventional materials and technology, and the seats are leather from a conventional four-legged animal.

The prototype does not have seatbelts or airbags, so it’s not street legal, except for demonstrations for TV news crew and automotive and tech writers. But, it could be rated as an LSV or NSV, for low-speed vehicle or neighborhood safe vehicle, similar to how golf carts are rated and used in gated communities and on corporate and university campuses. And on golf courses, of course.

Like them, the Strati is an EV, powered by a Renault Twizy drivetrain with a 6.1 kWh battery pack, and an estimated driving range of 60-65 miles. As with other electric vehicles, there are no gears other than drive, neutral and reverse. Although this prototype can reach 50mph, when it goes on sale top speed will be limited to under 30mph, similar to golf carts.

Local Motors CEO Jay Rogers dreams of a future where customers can swap their cars faster than their cellphones or tablets. Want a new model? Bring yours back to the factory, pick out a new design while yours is being melted down and the ingredients put back into the 3D printer.

Ford 3D printing
Ford uses personal 3D printers for next generation research and development, allowing engineers to create workable parts right at their desks digitally.

Table-top 3D printers, which DIY crafters and artists use to make jewelry, small serving bowls, knick knacks and such, cost around $3,000. So it will be a while before anything capable of 3D printing a car is affordable for any of us, much less able to fit into the garage.

Is a 3D printed car the car of the future? Certainly, as 3D printed parts prove their worth in crash-testing and cost analysis, we’ll be seeing more such printed parts on our vehicles, just as we are seeing more lightweight carbon fiber. But I sincerely doubt a completely 3D printed ride is down the road.

3dprintedride

Would you drive a 3D printed car?

photos courtesy Ford and Local Motors

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Filed Under: Green Travel Tagged With: 3dprintedride, ORNL

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Evelyn Kanter is the Past President of the International Motor Press Assn. (IMPA), a past Board Member of a prestigious professional group for travel journalists, and a member of several other top international organizations of journalists.

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