1. Check the temperature setting before printing, PETG filaments have higher extrusion temperature than that of PLA;2. Check if the plate surface has been used for a long time, it is recommended to replace it with our new one to ensure a strong first layer adhesion;3. If the first layer has poor adhesion, it is recommended to re-level the print substrate to reduce the distance between the nozzle and the surface plate;4. If the effect is not good, it is recommended to try printing the draft before printing.Specification:TemperatureRecommended Extrusion/Nozzle Temp: 230C - 250C (446? ~ 482?) Heated Bed Temp: 80C - 90C (176? ~ 194?) Filaments Diameter and Accuracy: 1.75 mm +/- 0.05Filaments Net Weight: 6 kg (13.2 lbs)Recommended Printing Conditions:Cooling Fan: Turned onPrinting Speed: 30~50(mm/s)Raft Separation Distance: 0.14(mm)Retraction Distance: 1~3 mm(Note? Based on 0.4 mm nozzle and simplify 3D V 4.0.; Printing conditions may vary with different nozzle diameters.) Packaging Included:6 spool of PETG filaments6 build surface