Harvard University engineering graduate Robert Flitsch, upset about the lack of portable 3D printers, launched a start up called Addibots which has built four prototype compact mobile printers. The machines are about metre long and about half a metre wide and tall with a tank to carry the printing material.

Addibots will put their model of the little robots on the market at some point in the next two or three years, with Flitsch currently working on a model that may be used to fill potholes:

The little bots will use the raw material — hot mix — to build up surfaces layer by layer, much like a boxy, desktop 3D printer would, but without the same space constraints...With his little robots, the world can be your workspace. Since his Addibots run on wheels, they could be used for any number of tasks connected with maintenance of road surfaces.

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