The benefits of 3D printing seem to outweigh its costs. A US company, Invisalign, uses the technology of 3D printing to make customized braces. A baby girl got a second chance at life using a 3D printer to create a splint to help clear her lungs. Researchers from Cornwell University used 3D printing technology to create a replica of a human ear.

Science fiction becomes reality as interest in 3D printing grows. Not only are 3D printers limited to hobbyists but it has become an integral part robot research centers. 3D printing machines are usually about the size of an average microwave. The costs vary depending on the type of object to be manufactured.

Users of 3D printers can make just about anything they want. Experts in the past have cast their doubts on 3D printing technology due to safety issues and potential disruption of the manufacturing industry.

CEO of Shapeways, Peter Weijmarshausen, says 3D printing will gradually change manufacturing processes. His company sells 3D products designed by people.

3D printers can make anything and anywhere right on the spot, eliminating the need for building in warehouses. The technology will allow airplane mechanics to replace damaged parts without needing to wait for logistics to deliver the items. Doctors could make biological body parts like a custom designed knee implant.

One of the biggest beneficiaries of 3D printing is the military. Soldiers on a mission will not have to wait for more ammunition in case they run out of bullets in an emergency situation. Time is essential in saving lives. A soldier won't need to wait for hours for the delivery to come. He could make his own ammunition and counter an enemy attack immediately.

According to US federal contract records, the US Defense Department has already invested on 3D printers, supplies and maintenance costing over USD $2million. Not only are 3D printers used in developing defense weapons, the military uses them for medical research as well. 3D printers might just be the next industrial revolution.

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