A difficulty in traditional manufacturing operations lies in machine spare part obsolescence. Spare part stocks must be kept high just in case, but squirreling parts away preemptively is not always the most effective or cost-efficient approach. 3D printing might be just the solution such manufacturers are after, as parts can be made on-demand, whatever their level of popularity. Read a more in-depth look at just how 3D printing can benefit this sector, potentially making obsolescence obsolete: http://3dprint.com/60963/3d-printing-obsolete/