Silk PLA

Generic Silk Profile 

Temperature Settings:

• Hot End Temperature: 200–230°C (Start at 210°C and adjust based on results)

• Bed Temperature: 50–65°C (Use lower temps to reduce adhesion issues on some beds)

Speed & Retraction

• Print Speed: 40–60 mm/s (Slower speeds improve glossiness and layer adhesion)

• Retraction Distance: 1–2 mm (Direct Drive) | 3–5 mm (Bowden)

• Retraction Speed: 25–40 mm/s (Avoid excessive retractions to prevent clogs)

Cooling & Adhesion

• Cooling Fan: 50–100% (Higher cooling improves overhangs but may weaken layer adhesion)

• Bed Adhesion: PEI sheet, glue stick, or a brim for larger prints

Layer & Infill

• Layer Height: 0.12–0.2 mm (Lower layers improve surface smoothness)

• Infill: 15–30% (Higher infill for stronger prints, lower for aesthetics)

Additional Settings:

Wall & Perimeter Settings

• Wall Thickness: 1.2 mm (At least 3 perimeters for stronger walls)

• Top/Bottom Layers: 4–6 layers (Improves surface finish and durability)

• Ironing: Enable ironing for a smoother and shinier top-layer finish

Flow & Extrusion Settings

• Flow Rate: 100–103% (Silk PLA may need a slight increase to compensate for its slippery texture)

Acceleration & Jerk Settings

• Acceleration: 500–1000 mm/s² (Lower values reduce ringing and improve print quality)

• Jerk: 5–8 mm/s (Slower movements help with smooth surface appearance)

Bridging & Overhangs

• Fan Speed: 80–100% (Higher cooling is best for overhangs, but watch for layer adhesion issues)

• Bridge Flow Rate: 90% (Prevents sagging in long bridges by reducing excess extrusion)

• Bridge Speed: 25–35 mm/s (Slow down to improve bridging quality)

First Layer Settings

• First Layer Speed: 15–20 mm/s (Slower speed helps with adhesion and a smooth bottom layer)

• First Layer Height: 0.2 mm (Thicker first layers improve adhesion and compensate for inconsistencies in bed leveling)

• First Layer Flow Rate: 105–110% (Increases material flow to ensure a solid foundation)

Supports (If Needed)

• Support Material: Use tree supports for cleaner removal

• Support Density: 10–15% (Lower values prevent strong bonding with the print)

• Support Interface Layers: 1–2 layers (Makes removal easier without damaging the surface)

Tricks and Tips for Printing with Silk PLA 

Nozzle Size and Maintenance

• Use a 0.4 mm or larger nozzle – Silk PLA has extra additives that can clog small nozzles. A 0.5 mm or 0.6 mm nozzle improves extrusion flow and reduces clogging risk.

• Clean your nozzle regularly – The silky additives can leave residue, leading to poor extrusion over time. Perform cold pulls or use a cleaning filament to prevent buildup.

Retraction Adjustments

• Avoid excessive retractions – Silk PLA is more prone to stringing, so keep retraction settings slightly lower than regular PLA.

• Recommended Retraction Settings:

  • Direct Drive: 0.8–1.5 mm retraction distance

  • Bowden Setup: 3–5 mm retraction distance

  • Retraction Speed: 25–35 mm/s (too fast can cause grinding, too slow can lead to blobs)

Print Speed and Cooling

• Print Slower for a Better Finish – Silk PLA flows differently due to its additives. Slower speeds improve the smoothness and shine of prints.

  • Recommended Speed: 30–50 mm/s (Slower speeds = better detail and glossiness)

• Cooling: Set the fan speed to 100% for best overhangs and bridging. However, reduce to 80% if layers aren’t bonding well.

Layer Adhesion and First Layers

• Ensure Good Bed Adhesion – Silk PLA has a slicker texture, making the first layers tricky. Use:

  • Bed Temp: 50–60°C

  • Brim or Raft: Helps with adhesion, especially for taller prints

  • First Layer Flow: Increase to 105–110% to ensure a solid first layer

• Increase Wall Thickness – Since Silk PLA is more brittle than standard PLA, increasing wall thickness to 1.2–1.6 mm improves strength.

Overhangs and Bridging Tips

• Silk PLA struggles with overhangs due to its slippery nature. To improve results:

  • Enable support for angles over 50°

  • Use tree supports for easier removal

  • Reduce print speed for overhangs to 20–30 mm/s

• For bridging, slightly increase the extrusion multiplier (1.03–1.05) and enable bridge flow tuning in your slicer.

Post-Processing and Finishing

• No sanding is needed. Unlike standard PLA, Silk PLA naturally hides layer lines, making sanding unnecessary.

• Painting: Use acrylic paints or airbrushing. Apply a clear coat for added shine.

• Warped Prints? Gently heat with a hairdryer or heat gun to soften and reshape.

Best Uses for Silk PLA:

• Display pieces, figurines, vases, decorative parts

• Smooth, aesthetic models without mechanical stress

Not ideal for:

• Functional parts requiring high-strength

• Heat-resistant applications (Silk PLA has the same low heat resistance as standard PLA)