15 Best SUNLU 3d Printing Filaments Under $50, Compared
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Finding the best SUNLU 3d printing filaments under $50 requires matching material characteristics and spool sizes to your printer. This guide examines 15 products based strictly on the specifications published on their listings. The SUNLU PLA 1.75mm Filament (4kg Bundle) takes the top spot because its 4 kg total package weight and 1.75mm diameter deliver dependable baseline output for bulk everyday monochrome FDM printing.
Different builds require different mechanical properties, from standard PLA and PETG to carbon fiber blends. This comparison helps you decide which filament formulation, spool weight, and surface finish match your machine capabilities and project demands.
Quick picks
The best fit for you
- You need bulk monochrome filament for everyday FDM printing SUNLU PLA 1.75mm Filament (4kg Bundle) It supplies a four-kilogram PLA bundle configured with two black and two white spools.
- You print rigid functional parts requiring high heat resistance SUNLU PA6-CF Carbon Fiber Nylon Filament Its carbon-fiber-reinforced PA6 nylon formulation withstands temperatures up to 209°C.
- You build durable functional prints for outdoor environments SUNLU PETG 1.75mm Filament (4kg White) The four-kilogram package provides impact-resistant PETG material holding a +/-0.02 mm diameter tolerance.
- You make small prints requiring several different colors SUNLU 250g Multicolor PLA Filament Bundle (8-Pack) It provides eight 250g spools across eight colors for 4.41 pounds of total material.
Our 15 picks
SUNLU PLA 1.75mm Filament (4kg Bundle)
Best for: bulk everyday monochrome FDM printing
- Material Type
- PLA
- Filament Diameter
- 1.75 mm
- Net Weight
- 4KG
- Max Print Speed
- 100mm/s
- Dimensional Accuracy
- +/- 0.02mm
- Weight
- 8.82 pounds
This bundle gives you 4 kg of 1.75 mm standard PLA filament split into black and white spools. It features a dimensional accuracy of +/- 0.02 mm and works within a nozzle temperature range of 200 to 230°C. With recommended print speeds between 50 and 100 mm/s, it suits everyday functional prints if you need bulk basic colors for standard FDM printers.
Pros
- Dimensional accuracy of +/- 0.02 mm
- Total net weight of 4 kg across black and white spools
- Neat mechanical spool winding to reduce tangling
- Standard working temperature range of 200 to 230°C
Cons
- Recommended print speeds top out at 100 mm/s
- Color variety restricted to monochrome black and white
Good fit if
- You need high-volume monochrome filament for standard FDM printers.
- You run standard print speeds between 50 and 100 mm/s.
Skip if
- You run high-speed printers requiring profiles over 100 mm/s.
- You require technical materials such as PETG, ABS, or nylon.
Verdict: SUNLU PLA 1.75mm Filament (4kg Bundle) delivers dependable bulk monochrome printing with standard temperature ranges and tight dimensional tolerances. It serves as a practical everyday baseline for high-volume makers.
SUNLU PLA+ 2.0 4KG Multicolor Pack
Best for: high-speed multi-color functional printing
- Material Type
- PLA+
- Filament Diameter
- 1.75mm
- Net Weight
- 4KG
- Max Print Speed
- 300mm/s
- Dimensional Accuracy
- +/- 0.02mm
- Dimensions
- 7.68 × 7.68 × 2.24 inches
This 4kg bundle provides SUNLU PLA+ 2.0 filament split across four 1kg spools in black, white, red, and Klein blue. It features a standard 1.75mm diameter with +/- 0.02mm dimensional accuracy and supports print speeds up to 300mm/s. Recommended temperatures are 205 to 220°C for the nozzle and 50 to 60°C for the bed. You will appreciate this pack if you need strong, high-speed material for multi-color functional prints.
Pros
- Supports print speeds up to 300mm/s
- Tight dimensional accuracy of +/- 0.02mm
- Four 1kg spools in black, white, red, and Klein blue
- Neatly wound spools designed to avoid tangling
Cons
- Fixed four-color variety with no single-color bulk option
- Requires a heated print bed between 50°C and 60°C
Good fit if
- You run high-speed prints up to 300mm/s.
- You need a four-color assortment for decorative or functional models.
- You want standard 1.75mm filament with +/- 0.02mm dimensional tolerance.
Skip if
- You need all 4kg in a single matching color.
- You operate a printer without a heated build platform.
Verdict: SUNLU PLA+ 2.0 Filament 4kg Bundle delivers dependable high-speed performance across four distinct colors with tight diameter consistency. It suits makers who need durable, crack-resistant filament for multi-part builds.
SUNLU PLA Plus Filament 4kg White
Best for: bulk white FDM 3D printing projects
- Material Type
- PLA Plus
- Filament Diameter
- 1.75mm
- Net Weight
- 4KG
- Dimensional Accuracy
- +/- 0.02mm
- Dimensions
- 2.76 × 7.87 × 7.87 inches
- Weight
- 8.82 pounds
This bundle provides 4 kg of white 1.75 mm PLA Plus filament across four spools. You get a dimensional accuracy of plus or minus 0.02 mm, requiring nozzle temperatures between 210°C and 235°C alongside bed settings between 55°C and 65°C. The spools feature standard 8.00-inch outer diameters and 2.20-inch hub holes. It suits you if you run continuous monochrome print jobs and need standard FDM compatibility.
Pros
- 1.75 mm diameter with +/- 0.02 mm dimensional accuracy
- Large 4 kg total volume supplied entirely in white
- Standard spool dimensions with an 8.00-inch outer diameter and 2.20-inch hub hole
- Works within printing ranges of 210°C to 235°C nozzle temperatures
Cons
- Single-color pack limits color variety across the 4 kg volume
- Requires higher nozzle temperatures than standard PLA
Good fit if
- You need a large 4 kg quantity of uniform white filament for production runs.
- You use an FDM printer setup compatible with 1.75 mm filament and 2.20-inch spool hub mounts.
Skip if
- You prefer a variety of different colors in a multi-pack bundle.
- You require engineering filaments like ABS or carbon-fiber nylon rather than PLA Plus.
Verdict: SUNLU PLA Plus Filament, White, 4KG delivers a consistent bulk supply of white material with reliable +/- 0.02 mm diameter tolerance. It serves high-volume standard FDM printing where color variation is unnecessary.
SUNLU PETG 1.75mm Filament (4kg White)
Best for: bulk durable indoor and outdoor functional prints
- Material Type
- PETG
- Filament Diameter
- 1.75mm
- Net Weight
- 4kg
- Max Print Speed
- 200mm/s
- Dimensional Accuracy
- +/-0.02 mm
- Weight
- 8.82 pounds
This four-kilogram bundle includes four spools of 1.75mm white PETG filament with +/-0.02 mm dimensional accuracy. You run it at nozzle temperatures between 240°C and 260°C, bed temperatures from 60°C to 70°C, and print speeds up to 200mm/s. It suits you if you need impact-resistant, weather-resistant indoor or outdoor prints with strong layer adhesion without switching spool colors between large functional jobs.
Pros
- Tight +/-0.02 mm diameter tolerance
- Wide 50 to 200mm/s print speed range
- High impact resistance for indoor and outdoor use
- Four-kilogram bulk quantity for extended print jobs
Cons
- Bundle restricted to a single white color
- Requires high nozzle temperatures between 240°C and 260°C
- Print speed maxes out at 200mm/s
Good fit if
- You need durable, weather-resistant parts for indoor or outdoor applications.
- You want a bulk 4kg supply of uniform white 1.75mm filament.
- Your 3D printer hardware supports nozzle temperatures up to 260°C.
Skip if
- You want multiple colors in a four-spool bundle.
- Your extruder cannot safely sustain 240°C to 260°C printing temperatures.
- You run high-speed print jobs exceeding 200mm/s.
Verdict: SUNLU 1.75mm White PETG Filament 4kg delivers bulk impact-resistant material engineered for functional indoor and outdoor prints. It offers dependable +/-0.02 mm diameter consistency across four spools for jobs requiring greater toughness than standard PLA.
SUNLU Silk PLA+ 4kg 4-Color Bundle
Best for: glossy decorative prints at standard speeds
- Material Type
- Silk PLA Plus
- Filament Diameter
- 1.75mm
- Net Weight
- 4kg
- Max Print Speed
- 60mm/s
- Dimensional Accuracy
- +/- 0.02mm
- Surface Finish
- Silk
This 4kg bundle provides four 1kg spools of 1.75mm Silk PLA Plus in silver, light gold, black, and white. Each spool features a +/- 0.02mm dimensional tolerance and produces a reflective, shiny finish. It runs at print speeds between 30 and 60mm/s with nozzle temperatures from 200 to 230°C. You get a reliable multi-color selection suited for display models and aesthetic prints.
Pros
- Includes four 1kg spools in light gold, silver, black, and white
- Tight dimensional accuracy of +/- 0.02mm
- Shiny, reflective surface finish
- Neatly wound spools to prevent tangling
Cons
- Maximum recommended print speed is 60mm/s
- Requires a heated bed between 60°C and 80°C
Good fit if
- You need a shiny, reflective finish for display models.
- You want four standard and metallic colors in one 4kg pack.
- You print at standard speeds between 30 and 60mm/s.
Skip if
- You print at speeds exceeding 60mm/s.
- You need a matte or non-reflective surface finish.
Verdict: SUNLU Silk PLA Plus 4kg Bundle (4 Colors) delivers consistent +/- 0.02mm tolerance and high-gloss aesthetics across four practical shades. It is a dependable choice for standard-speed decorative prints.
SUNLU Matte PLA 1.75mm 4KG Bundle
Best for: bulk printing low-glare white display models
- Material Type
- PLA
- Filament Diameter
- 1.75mm
- Net Weight
- 4KG
- Max Print Speed
- 100mm/s
- Dimensional Accuracy
- +/- 0.02mm
- Surface Finish
- Matte
This SUNLU four-kilogram bundle provides 1.75mm matte PLA across four spools of white filament. It features a low-gloss, frosted surface finish designed to hide visible layer lines on finished parts. With a dimensional accuracy of plus or minus 0.02 millimeters and a recommended print speed of 50 to 100 millimeters per second, it suits you if you produce smooth display models, architectural miniatures, or decorative prints in high volumes.
Pros
- Matte frosted finish minimizes visible layer lines
- Dimensional accuracy within +/- 0.02mm
- Neatly wound spools reduce feeding tangles
- Standard 200–230°C nozzle and 50–65°C bed temperature range
Cons
- Maximum recommended print speed is capped at 100mm/s
- Bundle only contains one color across all four spools
Good fit if
- You want a low-gloss frosted texture that hides layer lines.
- You run standard-speed print jobs between 50mm/s and 100mm/s.
- You need a bulk four-kilogram supply of white filament.
Skip if
- You operate high-speed 3D printers above 100mm/s.
- You require a variety of colors in one multi-pack.
Verdict: SUNLU Matte PLA 1.75mm 4KG Bundle delivers a low-glare frosted finish and tight dimensional tolerance for large decorative projects. It provides reliable bulk printing for display items as long as your machine stays within normal print speeds.
SUNLU High Speed PETG Filament 4KG
Best for: fast bulk printing of matte white parts
- Material Type
- PETG
- Filament Diameter
- 1.75mm
- Net Weight
- 4KG
- Max Print Speed
- 600mm/s
- Surface Finish
- Matte
- Features
- High Speed
This four-kilogram bundle includes four one-kilogram spools of 1.75 mm white PETG filament. It is rated for print speeds from 30 mm/s up to 600 mm/s and delivers a matte surface finish. You need a heated bed between 70°C and 80°C and nozzle temperatures up to 270°C for top speed. It suits you if you run fast printers and need impact-resistant parts in bulk.
Pros
- Supports print speeds up to 600 mm/s
- Provides a soft matte finish with reduced surface sheen
- Offers impact resistance and enhanced toughness
- Includes 4 kg total across four spools
Cons
- Bundle only includes white filament with no color variety
- Requires high nozzle temperatures up to 270°C at top speeds
- Requires a heated bed between 70°C and 80°C
Good fit if
- You run a high-speed 3D printer up to 600 mm/s.
- You need durable, impact-resistant parts with a non-glossy matte look.
- You print in high volume using only white filament.
Skip if
- You need multiple different colors in a multi-pack.
- Your printer hotend cannot reliably reach 270°C.
Verdict: SUNLU High Speed PETG Filament 4KG delivers rapid extrusion rates and impact toughness in a bulk multi-pack. It is built for fast printers that require matte-finish parts.
SUNLU 1kg Silk PLA Filament
Best for: glossy decorative prints and display models
- Material Type
- PLA
- Filament Diameter
- 1.75mm
- Net Weight
- 4kg
- Max Print Speed
- 60mm/s
- Dimensional Accuracy
- ±0.02mm
- Surface Finish
- Silk
This 1kg spool of SUNLU Silk PLA filament features a glossy surface finish designed for decorative prints without post-polishing. It uses a 1.75mm diameter with a dimensional accuracy of ±0.02mm and requires a nozzle temperature between 205°C and 215°C. With a recommended print speed of 30 to 60mm/s and bed heating between 60°C and 80°C, you get consistent extrusion suited for display models, art projects, and craft pieces.
Pros
- Tight ±0.02mm dimensional accuracy
- Glossy silk surface finish requires no polishing
- Vacuum-sealed packaging includes a desiccant pack
- Standard 55.88mm hub diameter fits most spool holders
Cons
- Recommended print speed tops out at 60mm/s
- Requires a heated bed between 60°C and 80°C
Good fit if
- You want a glossy, shiny finish on art or display models without manual polishing.
- You run your 3D printer at standard speeds between 30mm/s and 60mm/s.
- You need a standard 1kg spool with a 55.88mm hub hole diameter.
Skip if
- You need high-speed filament capable of printing beyond 60mm/s.
- You operate a 3D printer that lacks a heated bed.
Verdict: SUNLU 1kg Silk PLA Filament delivers a smooth, glossy aesthetic with tight ±0.02mm tolerances for standard-speed decorative printing. Its neatly wound 1kg spool and wide hub hole ensure dependable feeding across compatible FDM machines.
SUNLU 1.75mm PLA+ 4kg Refill Filament
Best for: Bambu Lab and AMS reusable spool users
- Material Type
- PLA Plus
- Filament Diameter
- 1.75mm
- Net Weight
- 4KG
- Weight
- 8.82 pounds
This bundle provides 4 kg of 1.75 mm PLA Plus filament in a spoolless refill format. It works with Bambu Lab spools, SUNLU 2025 reusable spools, AMS, and AMS Lite systems. Extrusion requires nozzle temperatures between 210°C and 235°C and bed temperatures between 55°C and 65°C. You will find it ideal if you already own compatible reusable spools and want bulk material without accumulating extra plastic rims.
Pros
- Spoolless refill format reduces plastic waste
- Compatible with Bambu Lab spools, AMS, and AMS Lite
- Generous 4 kg total quantity of 1.75 mm PLA Plus
- Specified nozzle printing temperature of 210°C to 235°C
Cons
- Requires existing compatible reusable spools to mount
- Incompatible with SUNLU second-generation detachable spools
Good fit if
- You own Bambu Lab spools or SUNLU 2025 reusable spools.
- You run an AMS or AMS Lite system and need spoolless refills.
- You print high volumes and need 4 kg of 1.75 mm PLA Plus.
Skip if
- You need pre-spooled filament ready to mount immediately.
- You only have SUNLU second-generation detachable spools.
Verdict: SUNLU 4KG PLA Plus Filament Refill delivers bulk 1.75 mm material intended for compatible reusable spools and AMS units without adding plastic waste. It provides a straightforward refill solution if you already have the required spool hardware.
SUNLU Silk PLA 4-Color Bundle (4 kg)
Best for: decorative multi-color prints at standard speeds
- Material Type
- Silk PLA Plus
- Filament Diameter
- 1.75mm
- Net Weight
- 4KG
- Max Print Speed
- 60mm/s
- Dimensional Accuracy
- +/- 0.02mm
- Surface Finish
- Silk
This bundle provides four 1-kilogram spools of 1.75mm Silk PLA Plus filament in silver, light gold, blue, and red. Each spool maintains a +/- 0.02mm dimensional accuracy and features a reflective, pearlescent surface finish. With a recommended print speed of 30 to 60mm/s and standard 200 to 230°C nozzle temperatures, it suits you if you produce decorative models, display pieces, or artistic prints across varied colors.
Pros
- +/- 0.02mm dimensional tolerance on 1.75mm diameter
- Includes four separate 1kg colors: silver, light gold, blue, and red
- Shiny, pearlescent silk surface finish for visual prints
- Standard 55mm spool hub hole diameter fits common spool holders
Cons
- Recommended print speed is limited to 30 to 60mm/s
- Requires a heated print bed between 60°C and 80°C
Good fit if
- You need a multi-color pack of shiny, silk-finish filament for display prints.
- You run standard FDM printers operating within a 30 to 60mm/s speed range.
- You want four distinct colors in full 1kg spools without buying separate rolls.
Skip if
- You print at high speeds exceeding 60mm/s.
- You prefer a matte, low-gloss, or non-reflective surface finish.
Verdict: SUNLU Silk PLA Plus 4KG 4-Color Bundle delivers four distinct metallic and vibrant spools tailored for decorative printing within standard print speeds. It is a practical multipack when you need consistent dimensional tolerance and a glossy finish for display objects.
SUNLU Silk Rainbow PLA Filament Bundle (2kg)
Best for: small decorative prints needing multi-color silk variety
- Material Type
- PLA+
- Filament Diameter
- 1.75mm
- Net Weight
- 2kg
- Surface Finish
- Silk
- Color Effect
- Rainbow
- Weight
- 4.41 pounds
View on Amazon: SUNLU Silk Rainbow PLA Filament Bundle (2kg)
This bundle provides 2kg of 1.75mm Silk PLA+ filament split across eight 250g spools. Each spool features a multicolor rainbow transition with a glossy silk surface finish. If you print smaller multi-colored decorative models, this setup gives you eight distinct color variations without committing to standard 1kg rolls. It works with standard 1.75mm PLA-compatible 3D printers, giving you variety across smaller creative projects.
Pros
- Includes eight separate 250g spools totaling 2kg of material
- Silk surface finish provides a high-shine appearance
- Standard 1.75mm diameter fits compatible PLA printers
- Eight different rainbow color options in a single bundle
Cons
- Small 250g spools require frequent changes on large prints
- Provides 2kg total material instead of 4kg bulk packages
Good fit if
- You want multiple rainbow color options across smaller 250g spools.
- You print decorative objects that benefit from a glossy silk finish.
- You use a 3D printer configured for 1.75mm PLA filament.
Skip if
- You need continuous 1kg spools for uninterrupted large prints.
- You require a matte or non-glossy exterior surface.
Verdict: SUNLU Silk PLA+ Rainbow 1.75mm Filament (2kg, 8-Pack) delivers eight compact 250g rolls with glossy rainbow transitions for small decorative projects. It provides color variety across 2kg of material without requiring full 1kg spools.
SUNLU PLA+ 2.0 Filament 4KG White Bundle
Best for: high-speed bulk printing in solid white
- Material Type
- PLA+2.0
- Filament Diameter
- 1.75mm
- Net Weight
- 4KG
- Max Print Speed
- 600mm/s
- Dimensional Accuracy
- ±0.02mm
- Features
- High Speed
This four-kilogram bundle includes four one-kilogram spools of white SUNLU PLA+ 2.0 filament in a standard 1.75mm diameter. Engineered with a tight ±0.02mm dimensional tolerance, it supports printing speeds between 50mm/s and 600mm/s. Each spool features a removable inner core compatible with Bambu refill systems and arrives vacuum-sealed with desiccant. It suits you if you run high-speed hardware and need a reliable, uniform supply of white filament for bulk projects.
Pros
- Supports high-speed printing from 50mm/s up to 600mm/s
- Tight ±0.02mm dimensional diameter tolerance
- Removable core compatible with Bambu refill spools
- Includes 4kg total of identical white filament
Cons
- Contains only white filament with no color variety
- PLA formulation offers lower thermal resistance than PETG
Good fit if
- You run high-speed 3D printers capable of reaching up to 600mm/s.
- You need a large volume of uniform white filament for multi-part projects.
- You use Bambu Lab reusable spool assemblies.
Skip if
- You want multiple filament colors in a single multi-pack.
- You require high-temperature resistance from materials like ABS or nylon.
Verdict: SUNLU PLA+ 2.0 High Speed Filament 4KG delivers rapid print capability up to 600mm/s alongside reliable dimensional precision across four identical white spools. It gives owners of fast printers a consistent bulk supply without mid-project color variation.
SUNLU PA6-CF Carbon Fiber Nylon Filament
Best for: heat-resistant, rigid mechanical and functional parts
- Material Type
- PA6-CF20
- Filament Diameter
- 1.75mm
- Net Weight
- 1KG
- Max Print Speed
- 150mm/s
- Dimensional Accuracy
- +/- 0.03mm
- Compatible Material
- Nylon
This 1kg spool combines 80% nylon with 20% carbon fiber reinforcement for high-load functional prints. You get heat resistance up to 209°C and a tight +/- 0.03mm diameter tolerance. It requires hotend temperatures between 270°C and 290°C and a hardened nozzle to handle the abrasive fibers. This filament suits you if you need stiff, heat-tolerant mechanical parts like gears, brackets, or motor housings rather than standard decorative models.
Pros
- Withstands temperatures up to 209°C
- Reinforced with 20% carbon fiber for increased stiffness
- Tight dimensional accuracy of +/- 0.03mm
- Supports print speeds up to 150mm/s
Cons
- Incompatible with AMS and multi-color feeding systems
- Requires high nozzle temperatures between 270°C and 290°C
- Abrasive carbon fibers require a hardened steel nozzle
Good fit if
- You need heat resistance up to 209°C for functional components.
- You have an all-metal hotend that reaches at least 270°C.
- You print mechanical parts like gears, brackets, and motor mounts.
Skip if
- You rely on an AMS or multi-material switching unit.
- You use a standard brass nozzle that will wear quickly.
- You cannot dry filament at 80°C or higher before printing.
Verdict: SUNLU PA6-CF Carbon Fiber Nylon Filament delivers exceptional rigidity and 209°C heat resistance for functional components. You will need dedicated drying equipment and a wear-resistant hardened nozzle to print it properly.
SUNLU 4kg Black ABS Filament
Best for: high-volume printing of durable mechanical parts
- Material Type
- ABS
- Filament Diameter
- 1.75mm
- Net Weight
- 4kg
- Dimensional Accuracy
- ± 0.02 mm
- Weight
- 8.82 pounds
This 4kg pack supplies four 1kg spools of black 1.75mm ABS filament with a dimensional accuracy of ±0.02 mm. It requires a nozzle temperature between 250°C and 260°C alongside a heated build platform at 80°C to 100°C. If you build functional mechanical components requiring impact resistance and heat tolerance, this bulk package provides consistent material for extended production runs on compatible FDM 3D printers.
Pros
- Tight dimensional accuracy of ±0.02 mm
- Bulk 4kg total volume across four individual spools
- High impact resistance and heat tolerance for mechanical parts
- Larger spool inner diameter for smoother unwinding
Cons
- Requires high nozzle temperatures of 250°C to 260°C
- Demands a high-temperature heated bed between 80°C and 100°C
- Recommended print speeds are limited to 40–60 mm/s
Good fit if
- You need heat- and impact-resistant material for functional parts.
- You operate a printer capable of maintaining 250°C nozzle and 80°C bed temperatures.
- You want a bulk 4kg supply of uniform black ABS.
Skip if
- You print on an unheated bed or cannot reach 80°C build plate temperatures.
- You need a variety of different colors in a single pack.
- You prioritize high-speed printing beyond 60 mm/s.
Verdict: SUNLU ABS 1.75mm 4kg Black Filament delivers impact-resistant material and tight ±0.02 mm tolerances for heavy-duty parts. It is a practical bulk option if your machine supports the required 250°C to 260°C nozzle temperatures.
SUNLU 250g Multicolor PLA Filament Bundle (8-Pack)
Best for: printing small multicolor models and accent parts
- Material Type
- PLA
- Filament Diameter
- 1.75mm
- Net Weight
- 2kg
- Max Print Speed
- 100mm/s
- Dimensional Accuracy
- ±0.02mm
- Color Printing
- Multi-Color
View on Amazon: SUNLU 250g Multicolor PLA Filament Bundle (8-Pack)
This bundle provides eight 250g spools of 1.75mm PLA, giving you 2kg total across eight colors. Each mini spool contains approximately 68 meters of filament with ±0.02mm dimensional accuracy. It operates at 200°C to 210°C nozzle temperatures with print speeds up to 100mm/s. You get color variety for accents and test runs without storing 1kg rolls, though using automated systems requires printing separate spool adapters.
Pros
- Eight separate 250g spools totaling 2kg of PLA filament
- Tight ±0.02mm dimensional tolerance across all rolls
- Compact spool dimensions measuring 140mm in diameter and 36mm in width
- Standard 200°C to 210°C nozzle and 50°C to 65°C bed temperature range
Cons
- Requires a printed adapter for Bambu Lab AMS or AMS lite compatibility
- Maximum rated print speed is 100mm/s
- Each spool holds only approximately 68 meters of filament
Good fit if
- You need a variety of colors for small parts and accents without buying full 1kg rolls.
- You run standard PLA profiles at print speeds between 50mm/s and 100mm/s.
Skip if
- You print large continuous models that require more than 250g of a single color.
- You need native spool compatibility with Bambu Lab AMS systems without printing adapters.
Verdict: SUNLU 250g Multicolor PLA Filament Bundle (8-Pack) provides eight distinct colors across 2kg of total filament for accent prints and prototypes. It eliminates half-used spools on small jobs, provided you can accommodate the non-standard spool diameter.
Specifications side by side
| Spec | SUNLU PLA 1.75mm Filament (4kg Bundle) | SUNLU PLA+ 2.0 4KG Multicolor Pack | SUNLU PLA Plus Filament 4kg White | SUNLU PETG 1.75mm Filament (4kg White) | SUNLU Silk PLA+ 4kg 4-Color Bundle | SUNLU Matte PLA 1.75mm 4KG Bundle | SUNLU High Speed PETG Filament 4KG | SUNLU 1kg Silk PLA Filament | SUNLU 1.75mm PLA+ 4kg Refill Filament | SUNLU Silk PLA 4-Color Bundle (4 kg) | SUNLU Silk Rainbow PLA Filament Bundle (2kg) | SUNLU PLA+ 2.0 Filament 4KG White Bundle | SUNLU PA6-CF Carbon Fiber Nylon Filament | SUNLU 4kg Black ABS Filament | SUNLU 250g Multicolor PLA Filament Bundle (8-Pack) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Material Type | PLA | PLA+ | PLA Plus | PETG | Silk PLA Plus | PLA | PETG | PLA | PLA Plus | Silk PLA Plus | PLA+ | PLA+2.0 | PA6-CF20 | ABS | PLA |
| Filament Diameter | 1.75 mm | 1.75mm | 1.75mm | 1.75mm | 1.75mm | 1.75mm | 1.75mm | 1.75mm | 1.75mm | 1.75mm | 1.75mm | 1.75mm | 1.75mm | 1.75mm | 1.75mm |
| Net Weight | 4KG | 4KG | 4KG | 4kg | 4kg | 4KG | 4KG | 4kg | 4KG | 4KG | 2kg | 4KG | 1KG | 4kg | 2kg |
| Max Print Speed | 100mm/s | 300mm/s | not specified | 200mm/s | 60mm/s | 100mm/s | 600mm/s | 60mm/s | not specified | 60mm/s | not specified | 600mm/s | 150mm/s | not specified | 100mm/s |
| Dimensional Accuracy | +/- 0.02mm | +/- 0.02mm | +/- 0.02mm | +/-0.02 mm | +/- 0.02mm | +/- 0.02mm | not specified | ±0.02mm | not specified | +/- 0.02mm | not specified | ±0.02mm | +/- 0.03mm | ± 0.02 mm | ±0.02mm |
| Surface Finish | not specified | not specified | not specified | not specified | Silk | Matte | Matte | Silk | not specified | Silk | Silk | not specified | not specified | not specified | not specified |
| Color Printing | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | Multi-Color |
| Compatible Material | PLA | PLA | not specified | PETG | PLA | PLA | PETG | PLA | PLA | PLA | PLA | PLA | Nylon | ABS | PLA |
| Features | not specified | not specified | not specified | not specified | not specified | not specified | High Speed | not specified | not specified | not specified | not specified | High Speed | Carbon Fiber | not specified | not specified |
| Size | 4 kg | 4KG | 4 kg | 4 kg | 4KG | 4KG | 4KG | 1KG | Pla+ Refill | 4KG | not specified | 4KG | Nylon | 4KG | not specified |
| Finish | not specified | not specified | not specified | not specified | Silk | Matte | not specified | Silk | not specified | Silk | Silk | not specified | not specified | not specified | not specified |
| Color Effect | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | Rainbow | not specified | not specified | not specified | not specified |
| Weight | 8.82 pounds | 8.82 pounds | 8.82 pounds | 8.82 pounds | 8.82 pounds | 8.82 pounds | 8.82 pounds | 8.82 pounds | 8.82 pounds | 8.82 pounds | 4.41 pounds | 8.82 pounds | 2.2 pounds | 8.82 pounds | 4.41 pounds |
| Dimensions | not specified | 7.68 × 7.68 × 2.24 inches | 2.76 × 7.87 × 7.87 inches | not specified | not specified | not specified | not specified | not specified | not specified | 7.87 × 2.68 × 7.87 inches | not specified | not specified | not specified | not specified | not specified |
| Color | Black+black+white+white | 1kg*4 Black+white+blue+red | White+white+white+white | 4000g White+white+white+white | 1kg*4kg Silk Silver+light Gold+black+white | 4kg Pla White+white+white+white | 4kg White+white+white+white | 1kg*4 Light Gold | Grey+grey+grey+grey | 1kg*4 Silk Pla Silver+light Gold+blue+red Bundle | Rainbow Colors | 4kg White+white+white+white | 1kg Pa6-cf20 Black (Hex Code: #000000 ) | 4000g Abs Black+black+black+black | 8 Colors: Black+white+blue+green+yellow+burly Wood+purple+grey |
| Model | 3D Printer Filament PLA Filament 1.75mm | pla+2.0 filament black filament white | SUNLU PLA Plus 3D Printing Filament | 3D Printer Filament PETG Filament 1.75mm | SILK PLA 3D Printer Filament | PLA Matte Filament | High Speed PETG Filament 1.75mm | SUNLU Filamento PLA+ Silk 1.75mm | not specified | SILK PLA 3D Printer Filament | not specified | High Speed PLA+ 2.0 Filament | Filament Technique pour Impression 3D | ABS Filament 1.75mm | DCUS-PLA-BK+WT+GY+BW+PP+BG+GG+PY-250g*8 |
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How to Choose the Right SUNLU Filament
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Check Print Speed Ratings
Evaluate the speed capabilities of your 3D printer before selecting a filament bundle. Standard formulations perform best within typical speeds, while specialized options like the SUNLU PLA+ 2.0 Filament 4KG White Bundle support print speeds up to 600mm/s. Rapid printing requires material that melts uniformly at high extrusion rates to prevent flow restriction and under-extrusion. If your printer operates at standard speeds, standard PLA or PETG remains sufficient. For high-speed CoreXY machines, verify that the listing specifies high-speed compatibility.
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Select the Surface Finish
Select your filament finish according to the intended use of the finished object. A matte finish, such as that on the SUNLU Matte PLA 1.75mm 4KG Bundle, scatters light and hides visible layer lines on display models and architectural mockups. Silk filaments offer a glossy, metallic luster that suits decorative figurines, though they require moderate print speeds to maintain sheen. Standard PLA provides a semi-gloss exterior suitable for general prototyping. Check the finish attribute on the spool listing to match your project aesthetic.
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Verify Spool Mounting Style
Check whether the listing provides complete spools or coreless refills before ordering. Spoolless options like the SUNLU 1.75mm PLA+ 4kg Refill Filament arrive without plastic rims to reduce physical waste. These rolls require compatible reusable spools, such as Bambu Lab AMS master spools, before mounting to your machine. If you lack reusable spool hardware or run a basic open-spool holder, standard spooled packs avoid assembly steps. Confirm your spool holder dimensions and whether you have dedicated reusable rims before buying coreless refills.
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Match Spool Weight to Usage
Consider your total project volume when deciding between standard one-kilogram rolls and divided mini-spools. Multipacks such as the SUNLU 250g Multicolor PLA Filament Bundle (8-Pack) supply eight distinct colors on compact 250-gram rolls. This format suits accent pieces, miniatures, and multi-color prototypes without leaving full, partially used spools exposed to ambient humidity. For large mechanical components or continuous manufacturing, one-kilogram spools or four-kilogram bulk bundles prevent frequent mid-job spool changes. Choose smaller spools for color variety and larger spools for continuous batch printing.
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Check Dimensional Tolerance Specs
Review the published dimensional accuracy before committing to bulk filament. Consistent extrusion depends on diameter stability, with listings such as the SUNLU PLA Plus Filament 4kg White maintaining a +/- 0.02 mm tolerance. Wide diameter swings can lead to flow inconsistencies, causing under-extrusion, rough surface walls, or hotend blockages during lengthy prints. Tighter tolerances ensure predictable volumetric feeding across entire multi-kilogram projects. Verify that the product specification explicitly lists a +/- 0.02 mm deviation to protect against mechanical extrusion issues on precision prints.
Frequently asked questions
What is the difference between standard SUNLU PLA and PLA+ 2.0?
SUNLU PLA+ 2.0 is formulated for higher print speeds and greater toughness than baseline PLA. While standard SUNLU PLA serves typical everyday builds, the PLA+ 2.0 line supports speeds up to 600 mm/s. It also provides improved crack resistance, making it better suited for multi-part mechanical assemblies on fast modern printers.
Can you use SUNLU filament refills without standard spools?
No, you need compatible reusable spools to run SUNLU refill filament. The SUNLU 4kg PLA Plus refill bundle arrives spoolless to reduce plastic waste, designed specifically for Bambu Lab AMS units and master spools. Mounting the coil onto a reusable frame prevents tangling during extrusion and ensures consistent feeding into your machine.
What dimensional tolerance does SUNLU filament maintain?
Most SUNLU filaments maintain a tight dimensional tolerance of +/- 0.02 mm across the spool length. Bundles such as the SUNLU PLA Plus, White PETG, and Silk PLA share this uniform diameter specification. This tight manufacturing threshold prevents sudden flow rate fluctuations, minimizing extrusion gaps or nozzle clogs during extended print jobs.
Which SUNLU filament options produce a non-glossy surface?
You can choose SUNLU Matte PLA or High Speed PETG if you want a low-glare appearance. The SUNLU Matte PLA 1.75mm bundle delivers a frosted finish tailored for display models without noticeable surface reflections. Similarly, SUNLU High Speed PETG produces matte-finish parts while offering the functional impact toughness inherent to PETG plastics.
How are the SUNLU 250g multi-color filament packs packaged?
SUNLU 250g multi-packs divide 2 kg of total material across eight individual mini-spools rather than standard 1 kg spools. Options like the 8-color PLA bundle include shades like burly wood, blue, and purple, while the rainbow pack features color-shifting silk rolls. These compact rolls prevent leftover waste on small models but require spool holders that accommodate smaller spool cores.
What makes SUNLU Silk PLA different from standard PLA?
SUNLU Silk PLA incorporates additives that give printed parts a smooth, high-gloss surface sheen resembling metal or satin. Unlike standard PLA used for utility prints, Silk formulations prioritize decorative aesthetics. Listings specify operating these filaments at standard print speeds rather than high speeds to preserve the reflective finish and maintain proper layer adhesion.
When should you choose SUNLU PETG over standard PLA?
Choose SUNLU PETG when your projects require higher impact resistance and durability than standard PLA can deliver. The white PETG and High Speed PETG bundles are engineered for functional indoor and outdoor parts exposed to mechanical stress. Standard PLA remains preferable for basic monochrome prototypes and decorative models where extreme toughness is unnecessary.