3D Filament PLA , 1.Lower melting point and better smell than ABS, flow rapidly, not blocking the ... nozzle; 2. PLA Filament 3D Filament PLA ,1.Lower melting point and better smell than ABS, flow rapidly, not blocking the ... when printing big size model.3. Dimensional accuracy ± 0.1mm with laser monitor and interlock device,smooth surface,no bumps,no break ...