Saturday, September 25, 2010

Classic cars for the masses: you don't need to be Jay Leno to own a Bugatti

Classic cars for the masses. Here's Jay Leno describing how he reproduces hard-to-get parts for his classic cars by using a 3D scanner and printer. By extension, you might one day be able to own a (cloned) Bugatti on a budget, by just 3D-printing a design downloaded from the internet.


 
One of the hardships of owning an old car is rebuilding rare parts when there are simply no replacements available. My 1907 White Steamer has a feedwater heater, a part that bolts onto the cylinders. It's made of aluminum, and over the 100-plus years it's been in use, the metal has become so porous you can see steam and oil seeping through. I thought we could just weld it up. But it's badly impregnated with oil and can't be repaired. If we tried, the metal would just come apart.

So, rather than have a machinist try to copy the heater and then build it, we decided to redesign the original using our NextEngine 3D scanner and Dimension 3D printer. These incredible devices allow you to make the form you need to create almost any part. The scanner can measure about 50,000 points per second at a density of 160,000 dots per inch (dpi) to create a highly detailed digital model. The 3D printer makes an exact copy of a part in plastic, which we then send out to create a mold. Some machines can even make a replacement part in cobalt-chrome with the direct laser sintering process. Just feed a plastic wire--for a steel part you use metal wire--into the appropriate laser cutter.

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