PolyTerra PLA is Polymaker's eco-friendly PLA formulation made with a plant-based composite resin. It also has distinct printing characteristics: a matte surface finish that hides layer lines unusually well, a tendency toward under-extrusion at standard PLA temperatures, and a printing window that rewards accurate calibration. This guide covers the specific settings that get the most out of PolyTerra's unique properties.
| Parameter | Recommended Value | Notes |
|---|---|---|
| Nozzle Temperature | 200–220°C | Start at 210°C; run temperature tower |
| Bed Temperature | 50–60°C | Cool PEI or textured PEI ideal |
| Flow Rate | 100–103% | PolyTerra under-extrudes; verify with wall test |
| Print Speed (perimeters) | 40–60 mm/s | Slower than generic PLA for surface quality |
| Print Speed (infill) | 80–120 mm/s | Speed infill normally |
| Cooling Fan | 100% from layer 2 | Full cooling preserves matte finish |
| Direct Drive Retraction | 0.8–1.0 mm | At 30–40 mm/s |
| Bowden Retraction | 3.5–4.5 mm | At 45–55 mm/s |
| Drying | 45°C for 4 hours | PolyTerra absorbs humidity quickly |
PolyTerra's standout feature is its diffuse matte surface that makes FDM layer lines less visible than almost any other PLA formulation. Several settings directly affect surface quality:
PolyTerra contains a higher filler content than standard PLA, which increases melt viscosity slightly. The two settings that address this are flow rate and nozzle temperature. Start with flow rate at 102% and temperature at 215°C. Print a single-wall hollow cube and measure actual wall thickness with digital calipers. If the measured wall is thinner than your slicer's line width, raise flow rate by 1% increments until it matches.
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