Food acceptable, low melt, smooth finish and the world’s first orthotics filament are now available here from 3D4Makers. Created using a unique extrusion process in which they extrude vertically and cool the created filament with compressed clean air, extrude at a much lower temperature in small cylinders, which means no degradation of the material and they do not add anything in the process to make extruding easier, so the finished filament is 100% the same as the pellets/granules that created them.