SUNLU Upgraded PLA+2.0 1.75mm Filament – High Speed, Tougher PLA Plus, 1kg Spool (White)

What it is

SUNLU Upgraded PLA+2.0 is a 1.75mm 3D printing filament designed to deliver faster prints with improved toughness compared with standard PLA+. It comes on a 1kg white spool and is packaged vacuum-sealed with a desiccant to minimise moisture uptake. The spool core is designed to be compatible with Bambu filament refills, making swapovers and reloading straightforward without needing to respool.

Why it matters

If you’re printing at higher speeds, the melt flow is optimised for speeds up to 600mm/s, which can save time without sacrificing surface quality or dimensional accuracy. The filament is described as having a tighter diameter tolerance of ±0.02mm, which contributes to smoother extrusion and more consistent layers—especially useful for larger prints where warping and stringing can be more noticeable.

What stands out

On the paper, the main claim is a substantial toughness boost—about 12x versus standard PLA—paired with a design that supports high-speed printing and reliable, low-stringing performance. The combination of a removable inner core on the spool and compatibility with Bambu refills is a practical touch for users who regularly switch between spools or printers.

Who it’s for

This filament is likely to appeal to makers who prioritise time-to-build and surface finish when printing functional parts or rapid prototypes. It may suit owners of high-speed printers or those exploring faster print cycles on PLA+ materials, provided their printer can handle the higher throughput without compromising quality.

Who it isn’t for

If you print mainly at very low speeds or require the absolute smallest dimensional tolerances, you may not notice a meaningful difference. Likewise, if your setup struggles with high-speed PLA+ or if you rely on a non-Bambu workflow, the claimed benefits could be less relevant.

When it makes sense to buy

Choose this filament if you want faster print times at reasonable quality, with improved toughness over standard PLA. The 1kg spool is a sensible starting point for testing a new material, especially when paired with compatible high-speed printers.

What to check before purchasing

• Confirm your printer’s compatibility with high-speed PLA+ workflows and ensure extrusion can handle up to 600mm/s without clogging.
• Verify ambient moisture conditions and whether you routinely re-dry filaments if needed (the desiccant packaging helps, but storage matters).
• Consider whether you’ll benefit from the Bambu-compatible spool design for easy refills and reduced downtime.

Practical usage note

Imagine printing a small functional part at a faster rate and then inspecting for any slight surface inconsistencies or warping. If you notice stringing at very high speeds, you may need to tune retraction and temperature settings, the description implies smoother results, but real-world results depend on your printer’s calibration.

In comparison to typical PLA+ workflows

This filament sets out to combine higher toughness with high-speed capability, a balance that often requires trade-offs. If your priority is ultra-fine surface finish at slow speeds, a standard PLA+ may still be preferable. If you value time savings and stronger parts, this could offer a meaningful edge.

Is it worth it?

Yes, if you prioritise speed without sacrificing dimensional accuracy and you operate a printer that can handle high-speed printing with PLA+. However, it may not be the best option if you prioritise the absolute finest surface finish at slow print speeds or if your setup isn’t tuned for high-speed PLA+.

Quick FAQ

• How precise is the filament diameter? It’s specified at ±0.02mm, which helps maintain consistent extrusion.
• Is the spool truly compatible with other brands? The design is described as compatible with Bambu refills, compatibility with others isn’t specified.
• What kind of prints benefit most from this filament? Large or fast-turnaround prints where toughness and speed are both desirable.