PLA silk rainbow 1.75mm, automatic color change in single extruder, 5 colors,purple red,red,yellow, green,blue and colors between them, 15 meters each color; | High-quality PLA rainbow, manual color change, color change red, orange, yellow, green, blue, purple and transition colors between the two colors, theoretically each color lasts 5-9 meters in length ,can be used in all kinds of FDM 3D printers, director extrusion or Bowden extruder. Printing smoothly, no jam, no warp, no cracking, no bad smell. | The surface of the material has a very bright color, as smooth as silk, layer strips invisible.PLA raw material is imported from European, no recycled material or reworks material, stable diameter control and no jam | It is suggested that the nozzle should be used at a temperature of 195-215 ℃. If hairy when printing, adjusted gradually by 5-10 ℃ each time. The platform can be glass, acrylic plate or PEI sheet, heat bed temp 50-70 ℃ | The cooling speed of silk materials is faster than that of ordinary PLA, so the machine can be adjusted slightly, such as the distance between raft and body, the distance between support and body, moving and cooling speed, etc