3D Printing Filament by OVERTURE. Details:Description: These 1. FAQs: Why can't the filaments stick to the build bed? 1. Check the temperature setting before printing, PLA filaments have lower extrusion temperature; 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 an 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: Temperature Recommended Extrusion/Nozzle Temp: 190°C - 220°C (374°F~ 428°F), Heated Bed Temp: 25°C - 60°C (77°F~ 140°F) Filaments Diameter and Accuracy: 99% Probability 1.75 mm +/- 0.03mm Printing Speed: 40~90 mm/s (2400mm~5400 mm/min) Filaments Net Weight: 1 kg (2.