It depends on how much filament is used. Small flat key chains may take 10-20 minutes. Large objects can take hours. Most printers would take 5+ hours to print an object at the maximum size of the print bed.
Can you 3d print metal?
Metal 3D Printing Services. Metal 3d printing, also known as direct metal laser sintering (DMLS) and direct metal laser melting (DMLM) is an additive layer technology. A metal 3d printer utilizes a laser beam to melt 20-60 micron layers of metal powder on top of each other.