Our Nylon PA6 is printed using Fused Deposition Modelling (FDM) technology. This allows us to keep the cost and turnaround time as low as possible for you. It does however mean that layer lines will be visible on your parts.  We also offer Nylon PA12 with our SLS printers. This works by using a laser to selectively fuse powdered Nylon layer by layer to create a solid object.