#D printed scales on a kershaw. Looks pretty cool. I guess it depends on what kind of printer you have in order to print different materials than normal plastics. I've seen concrete and metal printers used for creating other items.http://www.alloutdoor.com/2014/07/25/3d ... fe-scales/
I've been interested in the applications of the newer metal 3d printers. I hear gunsmiths are interested in them, to print old, out of production parts. They even printed a metal 1911 back in November 2013. But those have to only have a rockwell hardness in the 20's(barrel) to 30's(frames), nowhere near that of a kitchen knife(don't knives also need different hardnesses between the spine and the edge?).
While printing metal handles would be cool, I wonder, are there any applications for printing a knife, if they can work out the heat treating?