Direct Metal Laser
The models are printed layer by layer with a laser that draws thin lines in the powder, which melts and bonds it together to form a thin layer of the model. After a layer is printed, a new layer of fresh powder is spread over the surface by a roller. The printer has a print chamber which is heated to just below the melting point of the powder. The laser beam adds the extra energy to melt the powder and forms a solid model. After a print job is finished, the result is a printed model with support structures to be removed manually.