... commonly used in 3D printing, has the following characteristics:(1) high strength, good toughness;(2)density is small, ... ;(4) softer than PLA;(5) diameter of 3.0/1.75mm, variations + /-0.1mm,roundness +/-0.05mm ... filament ,we will dry ABS and PLA for a enough time (3-5 hours).II. Mix with colors masterbatch ... dragging rate , make filament diameter range at 1.6-1.8mm/2.8-3.0mm, roundness +/-0.05mm, each spool ...