Warping occurs when the plastic is heated unevenly, causing it to deform. To prevent polycarbonate filament from distortion, it is essential to use a heated build platform and to keep the temperature as consistent as possible. In addition, it can be helpful to use a brim or raft to provide extra support for the plastic. Finally, allowing the polycarbonate time to cool slowly after printing is essential. By taking these precautions, you can help ensure that your polycarbonate prints look their best.