PLA plastic filament is stronger and more rigid than the ABS filament. The 3D printed parts will feel more glossy. PLA plastics can also be sanded and machined.
PLA filament has a relatively low melting temperature compared to other thermoplastics. PLA has much less warping versus ABS, and thus a heated build platform is not required. Because a heated bed plate is not used for PLA, many users often prefer to print using blue painters tape instead of kapton tape. PLA filament generally enjoys sharper details and corners compared to ABS without the risk of cracking or warping. PLA can also be printed at higher throughput speeds.
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