1 / 7SUNLU PLA Filament Refill, 1.75 mm, 4 kg, Grey
SUNLU PLA Filament Refill is a spool-less 1.75 mm refill pack listed as four grey units totaling 4 kg. It is intended for use after installation on a compatible reusable spool, rather than loading directly into a printer.
At a glance
- Refill filament must be mounted on a reusable spool before printing. The listing names SUNLU and Bambu Lab spools as compatible.
- The 4 kg listing is divided into four grey units, based on the title and product details.
- The manufacturer recommends PLA nozzle temperatures of 210–240℃, a 50–65°C bed, and 100–200mm/s print speed.
- The listing claims sealed vacuum packaging with a built-in desiccant.
Often bought together
Pros and cons
Pros
- Spool-less refill format can make use of compatible reusable spools instead of requiring a new spool for each refill.
- Four grey units provide a bulk supply for users who print regularly.
- Published print settings offer a starting point for tuning.
Cons
- It cannot be used directly as supplied. A compatible reusable spool is required for installation.
Technical specifications
8 specifications| Brand | SUNLU |
|---|
| Filament diameter | 1.75 millimeters |
|---|---|
| Listed weight | 4 kg |
| Listed color and quantity | 4000g Pla Grey+grey+grey+grey |
| Manufacturer part number | SLUS-PLA-GY+GY+GY+GY-1KG*4-N |
| Recommended nozzle temperature | 210-240℃ |
|---|---|
| Recommended bed temperature | 50-65°C |
| Recommended print speed | 100-200mm/s |
What to know before buying
Listing details to confirm
The listing describes a 4 kg total as four grey units, while the color field labels the total as “4000g”. Confirm the selected listing’s pack configuration and intended spool fit before purchase, especially because customer feedback reports mixed fit and winding experiences.
Who is it for?
A good fit for
- Owners of SUNLU or Bambu Lab reusable spools looking for grey PLA refill filament.
- Regular 3D printer users who can use a four-unit, 4 kg filament supply.
- Buyers willing to install a refill and tune their printer using the recommended settings.
Less suited to
- Anyone needing filament already mounted on a spool or ready to load without assembly.
- Buyers who need confirmed fit with a spool system other than those named in the listing.
Customer reviews on Amazon
- 5 stars
84% 84% - 4 stars
5% 5% - 3 stars
2% 2% - 2 stars
2% 2% - 1 star
7% 7%
Customer feedback is broadly positive about filament and print quality, grey color consistency, and clean finishes, including reported use with Bambu P1S printers. Some customers also describe tangles that can lead to clogs, and opinions on winding and spool fit are mixed, with reports that some standard spools do not fit. For a refill that requires spool installation, confirming compatibility matters as much as the listed 1.75 mm diameter. Aggregate ratings are mostly five-star but include a notable one-star share, so they do not guarantee a consistent fit or tangle-free experience.
Positive themes
- Customers report good filament quality, clean finishes, and consistent color between spools.
- Some customers say it works well with Bambu P1S printers.
Negative themes
- Some customers report that the refill does not fit standard spools.
Mixed feedback
- Reports differ on tangling and winding. Some describe smooth feeding, while others report tangles, clogging, or poorly wound filament.
- Spool fit receives mixed feedback, making compatibility worth confirming before purchase.
Frequently asked questions
Can this refill be used directly in a printer?
No. The listing says it must first be installed on an empty reusable spool. SUNLU and Bambu Lab spools are named as compatible.
How much filament is listed in the pack?
The listing gives a total weight of 4 kg and a count of four. Its color field describes four grey units.
What print settings does SUNLU recommend?
The supplied guidance is 210–240℃ for the nozzle, 50–65°C for the bed, and 100–200mm/s print speed. Treat these as starting recommendations and adjust for your printer and setup.
Does customer feedback indicate consistent spool fit?
Feedback is mixed. Some customers report fit problems with standard spools, so confirm that your reusable spool is compatible before buying.
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