In this photo taken Wednesday, May 15, 2013 Wayne Losey, co-founder of Dynamo DevLabs, is silhouetted on a screen while speaking about 3D printing during the Hardware Innovation Workshop in San Mateo,... more 
In this photo taken Wednesday, May 15, 2013 Wayne Losey, co-founder of Dynamo DevLabs, is silhouetted on a screen while speaking about 3D printing during the Hardware Innovation Workshop in San Mateo, Calif. With the printers users make whatever they like, iPad stands, guitars, jewelry, someone even made a rifle. About the size of a microwave oven, the printers usually extrude plastic, layer upon layer, to create objects. Sales are projected to jump from about $1.7 billion in 2011 to $3.7 billion in 2015. (AP Photo/Eric Risberg) less 
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Associated Press | Photo By Eric Risberg
Sun, Jun 2, 2013 3:34 PM EDT