In Normal 3d Printing, First, the printer prepares the printing chamber. Then, the model is printed by shooting colored glue on layer by layer of plaster powder. When all layers have been printed, the model can be dug out of the printing chamber with the help of a vacuum cleaner that is built into the printer. Then, the rest of the powder is removed with pressurized air in an extra chamber of the printer.

This printer uses Metal! The same process but instead of plastic, you can use metal!
You can see some pictures of the printing process here: …