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As it happens, I am in the midst of having prototypes 3D printed for an invention I hope to market. The value of even the rudimentary ABS ten year old printer has proven itself, allowing me to handle my concept and make minor alterations that will now go to a 3D printer using elastomers to make my prototypes very close to the final product.

Even at 67, the new project and new technology fascinates. I will be availing of it for a second invention as soon as I have the final protos in developers' hands. As to printing at home? ... The Objet Connex is well over $100,000, and that is perhaps state of the art yet not accessible for typical middle class homes.