... spool packaging, can be automatic feed;(7) to be applied to a variety of 3D printer, Makerbot, Mendel, ... range at 1.6-1.8mm/2.8-3.0mm, roundness +/-0.05mm, each spool net weight ... control I. we have diameter laser detect kits to control extruding rate on line, when diameter ... packaging, quality control ,producing control, we can do according to your requirements . we have colors: Natural, white, ...