How CAD files are exported to STL is an important process for accurate building of. parts. The step by step process for converting CAD files to STL was taken straight. from the mentioned companies websites. Definition. STL is the standard file type used by most or all rapid prototyping systems. A STL. is a triangulated representation of a 3D CAD model (figure 1). The triangulation of. a surface will cause faceting of the 3D model. The parameters used for outputting. a STL will affect how much faceting occurs (figure 2 and 3).
They used iron to replace bronze in implements and weapons. This shift occurred because iron, when alloyed with a bit of carbon, is harder, more durable, and holds a sharper edge than bronze. For over three thousand years, until replaced by steel after CE 1870, iron formed the material basis of human civilization in Europe, Asia, and Africa.. Source.
How Steel is Made: a Brief Summary of a Blast Furnace: There are two types of metals, ferrous & non-ferrous. Ferrous comes from, or contains iron, while Non-Ferrous does not contain iron. Some examples of ferrous metals would be mild steel, cast iron, high strength steel, and tool steels. Examples of non-ferrous metals would be copper, aluminum, magnesium, titanium, etc. To make steel, iron ore is first mined from the ground. It is then smelted in blast furnaces where the impurities are removed and carbon is added.