 In 1988, Northwest Airlines pilot Robert Plath invented tilt-and-roll luggage as travelers beforehand had to carry suitcases in their hands, toss garment bags over their shoulders, or strap luggage on top of metal carts.1988 Fused deposition modeling
Fused deposition modeling, which is often referred to by its initials FDM, is a type of additive fabrication or technology commonly used within engineering design.FDM works on an "additive" principle by laying down material in layers.