Laser sintering is 3-D printing on steroids. The process is another form of additive manufacturing that shoots laser beams at metal powders to fuse particles together. As the powder bed is lowered, a new layer of particles is put on and then fused onto the emerging shape below it, slowly building up metal components and prototypes. The process, being employed by GE to make jet engine parts, produces little waste and allows for bespoke component designs on demand. See the video here.