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High-Speed 3D Printer Filament | FAQ

1. What is the main difference between High-Speed (HS) PLA and standard PLA?

The main difference lies in the melt flow index (MFI). HS-PLA is chemically modified so that it has a lower viscosity in its molten state. This allows it to flow through the nozzle up to 500% faster without causing incomplete extrusion (under-extrusion).

2. Does high-speed printing require higher temperatures?

Yes. Since the filament spends significantly less time in the "melt zone" at a speed of 500 mm/s, you often need to increase the nozzle temperature by 20 °C to 30 °C compared to the standard settings. This is the only way to ensure that the plastic is completely melted before it leaves the nozzle.

3. How can I tell if my filament has absorbed moisture?

You hear popping, crackling, or hissing sounds at the nozzle during the printing process. Visually, moisture manifests as small bumps ("zits"), increased stringing, or a rough surface texture on your components. This is caused by water trapped in the plastic, which evaporates suddenly when heated.

4. Should I dry my filament, even if it is brand new?

Ideally, yes. Many filaments are water-cooled during the manufacturing process and are often not perfectly dry when subsequently vacuum-packed. If you dry new filament for 4 to 6 hours before its first use, you can save yourself 90% of the frustration with the "first layer".

5. How long does a spool of filament last?

When stored in a cool, dry place with desiccant (silica gel), most filaments last 1 to 2 years. PLA is the most stable, while nylon and TPU can degrade faster if exposed to UV light or high humidity.

6. What is the maximum print speed supported by SUNLU High-Speed Marble PLA?

SUNLU's High-Speed Marble PLA is specifically optimized for next-generation ("next-gen") speeds. It supports a print speed of up to 450 mm/s while fully maintaining its characteristic stone-like texture and appearance.

7. Is there also PETG that is optimized for high-speed printers?

Yes, SUNLU offers a high-speed matte PETG. It combines the heat resistance and durability of PETG with high-flow additives and features a matte finish to hide layer lines that might otherwise be more pronounced in high-speed prints.

8. Does SUNLU offer bulk packs for high-speed printing projects?

Yes. Since high-speed printers consume material significantly faster, SUNLU offers large 3 kg and 5 kg spools for High-Speed PLA. This reduces the frequency of spool changes during large-scale production.

9. Can SUNLU high-speed filaments be used with the Bambu Lab AMS?

Yes. SUNLU high-speed filaments are compatible with the AMS (Automatic Material System). They even offer an "AMS heater" and special spool sizes that fit perfectly into multi-material systems for fast, multi-color printing.