Metal Earth is a series of amazingly detailed do-it-yourself 3D models that you assemble from single sheets of laser-cut steel. Thanks to the ingenious slot-and-tab design, no tools, fasteners, or glue are required to build Metal Works 3D Sculptures. All you need are your hands! Simply pop out the pieces and bend, fold, and assemble them using the included illustrated instructions. Depending on the complexity of the model, Metal Earth can take anywhere from 30 minutes to several hours to complete.