Best Rainbow 3d Printing Filaments in 2026: 15 Picks Ranked by Specs
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
Finding the best rainbow 3d printing filaments requires balancing dimensional accuracy with transition length and material finish. This guide compares 15 picks based on the specifications published on their listings.
The SUNLU Rainbow PLA Filament 1.75mm 1kg leads the list because its strict ±0.02 mm tolerance and predictable 8-meter transitions deliver dependable gradients for medium to large decorative prints. This guide helps you decide between matte, silk, or flexible TPU materials to fit your extruder setup and print scale.
Quick picks
The best fit for you
- You want predictable gradient cycles for decorative models SUNLU Rainbow PLA Filament 1.75mm 1kg It features an 8-meter color transition cycle with ±0.02 mm dimensional tolerance on a 1kg spool.
- You want to print rainbow parts at high speeds FLASHFORGE 1.75mm Rapid Rainbow Candy PLA It supports print speeds up to 500mm/s with ±0.02mm dimensional accuracy.
- You need flexible multi-color material for elastic prints AMOLEN Transparent Multicolor Rainbow TPU (4 x 200g) It uses a flexible TPU base divided into four 200g transparent rainbow spools.
- You want a glare-free finish without glossy reflections OVERTURE Matte Rainbow PLA Filament 1.75mm 1kg It provides a matte rainbow finish with ±0.02 mm diameter tolerance on a 1kg spool.
Our 15 picks
SUNLU Rainbow PLA Filament 1.75mm 1kg
Best for: medium to large multi-color decorative prints
- Color Effect
- Rainbow (what this guide is about)
- Material Type
- PLA
- Filament Diameter
- 1.75mm
- Net Weight
- 1KG
- Max Print Speed
- 200mm/s
- Dimensional Accuracy
- ±0.02mm
This 1 kg spool of 1.75 mm standard PLA filament features an 8-meter color transition interval designed for multicolor FDM printing. It maintains a dimensional tolerance of ±0.02 mm and supports print speeds between 100 and 200 mm/s with nozzle temperatures from 210 to 240 °C. If you want dependable gradient shifts on mid-sized models without adjusting complex slicer profiles or swapping filaments manually, this spool fits your standard setup.
Pros
- Consistent ±0.02 mm dimensional diameter tolerance
- Color gradient changes regularly every 8 meters
- Supported print speeds up to 200 mm/s
- Standard 8.00-inch spool with 2.20-inch hub diameter fits most spool holders
Cons
- 8-meter color change interval requires larger prints to display multiple shades
- Print speed ceiling of 200 mm/s falls below high-speed PLA ratings
- Nozzle temperature requirement of 210–240 °C is higher than standard PLA baseline
Good fit if
- You print medium-to-large models that use at least 8 meters of filament per color change.
- You need tight ±0.02 mm diameter tolerance for consistent extrusion.
- You run your prints at standard speeds up to 200 mm/s.
Skip if
- You print tiny figurines that use too little filament to reveal color shifts.
- You use high-speed printers configured for speeds above 200 mm/s.
Verdict: SUNLU 1kg Rainbow PLA Filament delivers reliable multi-color gradient printing with strict ±0.02 mm tolerances and predictable 8-meter transitions. It is a solid, predictable choice for standard-speed decorative prints.
Creality 1kg Rainbow PLA+ Filament
Best for: tough multi-color prints on FDM machines
- Color Effect
- Rainbow (what this guide is about)
- Material Type
- PLA+
- Filament Diameter
- 1.75mm
- Net Weight
- 1kg
- Dimensional Accuracy
- ±0.02mm
- Dimensions
- 8.26 × 8.26 × 2.79 inches
Creality 1kg Rainbow PLA+ Filament supplies multi-color 1.75mm PLA+ material on a single 1kg spool. It maintains a dimensional accuracy of ±0.02mm and arrives vacuum-sealed with desiccant to limit moisture absorption before use. If you need standard 1.75mm rainbow printing with enhanced material toughness for functional items or display models on compatible FDM printers, this spool gives you consistent feed dimensions and multi-hue transitions.
Pros
- Tight ±0.02mm dimensional tolerance
- PLA+ formulation provides enhanced bending toughness over standard PLA
- Vacuum-sealed packaging includes desiccant
- Compatible with 1.75mm FDM 3D printers
Cons
- Recommended nozzle and bed temperatures are omitted from specifications
- Color change frequency and transition lengths are unlisted
Good fit if
- You want rainbow color changes combined with the impact resistance of PLA+.
- You require ±0.02mm dimensional consistency for reliable feeding.
- You use an FDM printer compatible with standard 1kg spools.
Skip if
- You need pre-documented nozzle temperature ranges in the published specs.
- You require specific, measured color change intervals along the spool.
Verdict: Creality 1kg Rainbow PLA+ Filament provides dependable ±0.02mm diameter precision and enhanced material toughness for multi-color FDM printing. It suits makers who want rainbow aesthetics on functional models that demand higher impact resistance than standard PLA.
OVERTURE Matte Rainbow PLA Filament 1.75mm 1kg
Best for: glare-free rainbow prints with hidden layer lines
- Color Effect
- Rainbow (what this guide is about)
- Material Type
- Matte PLA
- Filament Diameter
- 1.75mm
- Net Weight
- 1kg
- Dimensional Accuracy
- ±0.02 mm
- Surface Finish
- Matte
View on Amazon: OVERTURE Matte Rainbow PLA Filament 1.75mm 1kg
This 1kg spool of 1.75mm filament pairs a multi-color rainbow transition with a non-glossy, frosted matte finish designed to diffuse light and hide layer lines. It maintains a tight dimensional accuracy tolerance of ±0.02 mm using closed-loop diameter monitoring. If you want multi-color decorative prints, miniatures, or display pieces without the reflective shine of typical silk filaments, this material fits your printer.
Pros
- Frosted matte finish conceals layer lines without surface gloss
- Tight ±0.02 mm dimensional accuracy tolerance
- Standard 1.75 mm diameter compatible with most PLA 3D printers
- 1-year shelf life specified for properly stored unopened spools
Cons
- Lacks the high-gloss reflective sheen of silk rainbow filaments
- Color transition interval length per hue is not specified
Good fit if
- You want a rainbow color transition with a glare-free, frosted texture.
- You require tight ±0.02 mm diameter tolerance for consistent extrusion.
- You need standard 1.75 mm filament on a 1kg spool for display prints.
Skip if
- You prefer glossy or shiny silk rainbow finishes.
- You require specialized high-speed filament ratings.
Verdict: OVERTURE Matte Rainbow PLA 1.75mm 1kg delivers a glare-free, frosted surface finish and consistent ±0.02 mm tolerance across multi-color prints. It is a dependable choice when you want subdued decorative models instead of high-gloss silk finishes.
YOOPAI Rainbow PLA 250g Bundle
Best for: small models needing fast rainbow color shifts
- Color Effect
- Rainbow (what this guide is about)
- Material Type
- PLA
- Filament Diameter
- 1.75mm
- Net Weight
- 250g
- Dimensional Accuracy
- ±0.02mm
- Weight
- 2.6 pounds
This bundle provides 1.75mm rainbow PLA filament on compact 250g mini spools. It features ±0.02mm dimensional accuracy and shorter color transition intervals designed to display distinct shades on smaller prints. With a 140mm outer spool diameter and a 53mm center hole, it mounts to most standard open holders. You will find it ideal if you want frequent rainbow color shifts across small items without purchasing full 1kg spools.
Pros
- Tighter ±0.02mm dimensional tolerance for steady extrusion
- Shorter color transition intervals optimized for compact models
- Compact 250g spool size avoids storing unused filament
- Neatly wound spool to reduce feeding interruptions
Cons
- Requires a third-party adapter for Bambu Lab AMS compatibility
- Small 250g capacity is not suited for continuous large-scale jobs
Good fit if
- You print compact items like figurines or vases and want fast color shifts
- You want smaller material quantities without stocking full 1kg rolls
- You use an external, open, or top-mounted spool holder
Skip if
- You need 1kg spools to complete large, unbroken prints
- You intend to use Bambu Lab AMS units without sourcing an adapter first
Verdict: YOOPAI Rainbow PLA 250g Mini Spool Bundle delivers rapid color transitions and reliable ±0.02mm dimensional accuracy on space-saving spools. It is a practical pick if you want distinct rainbow gradients on small builds without committing to full 1kg rolls.
YOOPAI Silk PLA+ 1.75mm 8x250g Bundle
Best for: frequent color transitions on smaller decorative prints
- Color Effect
- Rainbow (what this guide is about)
- Material Type
- PLA+
- Filament Diameter
- 1.75mm
- Net Weight
- 250gx8
- Dimensional Accuracy
- ±0.02mm
- Surface Finish
- Silk
This bundle gives you eight 250g spools of 1.75mm silk PLA+ filament, totaling two kilograms of material. Each spool features a fast color shift every 8 meters, creating distinct gradients on small to medium models. The PLA+ formulation offers higher impact resistance than standard PLA, while the silk additive produces a glossy finish. It suits you if you print decorative parts across multiple colorways without buying full 1kg rolls.
Pros
- Rapid color transition every 8 meters for visible gradients on smaller prints
- Eight individual 250g spools allow color variety without full-roll commitments
- Durable PLA+ blend offers higher impact resistance than standard PLA
- Tight dimensional accuracy specified at ±0.02mm
Cons
- Small 250g capacity per spool requires frequent swaps on large models
- Package does not include a full-size 1kg continuous spool
Good fit if
- You print smaller models and want distinct color transitions every 8 meters.
- You prefer multiple 250g mini spools over committing to single large spools.
- You want silk-finish decorative prints with the higher toughness of PLA+.
Skip if
- You need continuous 1kg spools for uninterrupted large prints.
- You prefer a flat or matte surface finish instead of a glossy sheen.
Verdict: YOOPAI Silk PLA+ 1.75mm 8 x 250g Bundle delivers high impact resistance and quick 8-meter rainbow color transitions across eight mini spools. It provides variety and durability for decorative printing without committing to single large rolls.
SUNLU Rainbow PLA 1.75mm Filament (1kg)
Best for: decorative prints on standard FDM setups
- Color Effect
- Rainbow (what this guide is about)
- Material Type
- PLA
- Filament Diameter
- 1.75mm
- Net Weight
- 1KG
- Max Print Speed
- 200mm/s
- Dimensional Accuracy
- ±0.02mm
This standard 1kg spool of 1.75mm rainbow PLA provides a multi-color gradient that transitions every 8 meters. It features a ±0.02mm dimensional accuracy to prevent flow irregularities during feeding. You can run it at nozzle temperatures between 210°C and 240°C with print speeds up to 200mm/s. It suits you if you produce decorative models on standard FDM setups and want dependable color shifts without manual filament changes.
Pros
- Changes color every 8 meters for steady gradient transitions
- Tight ±0.02mm diameter tolerance ensures consistent extrusion
- Supports print speeds up to 200mm/s
- Standard spool dimensions fit most open FDM spool holders
Cons
- Maximum print speed caps at 200mm/s
- Requires at least 8 meters of filament to complete one color transition
Good fit if
- You print medium to large models where 8-meter color transitions have room to show.
- You run an FDM printer compatible with standard 1.75mm spools at speeds up to 200mm/s.
Skip if
- You print very small items that use less than 8 meters of material.
- You need high-speed filament rated beyond 200mm/s.
Verdict: SUNLU 1kg Rainbow PLA Filament delivers consistent feeding and an 8-meter gradient cycle for standard-speed decorative printing. Its tight ±0.02mm tolerance makes it a reliable choice for everyday multi-color projects.
Geeetech Silk Rainbow PLA Filament 1kg
Best for: Glossy decorative prints needing regular color changes
- Color Effect
- Rainbow (what this guide is about)
- Material Type
- PLA
- Filament Diameter
- 1.75mm
- Net Weight
- 1 kg
- Dimensional Accuracy
- +/- 0.03 mm
- Surface Finish
- Silk
This Geeetech filament is a 1 kg spool of 1.75 mm silk PLA designed for multicolor prints. It features a five-color sequence of red, yellow, blue, green, and purple with transitions occurring every 5 meters. With a dimensional accuracy of +/- 0.03 mm and a high-gloss finish, it suits you if you produce decorative models requiring frequent color shifts across medium or large prints.
Pros
- Cycles through five colors every 5 meters
- High-gloss silk surface finish
- Standard +/- 0.03 mm dimensional tolerance
- Vacuum-sealed packaging with desiccant
Cons
- Tolerance of +/- 0.03 mm is broader than +/- 0.02 mm alternatives
- 5-meter transition length requires enough material consumption to show color changes
Good fit if
- You want a glossy, reflective finish without post-processing.
- You print medium-to-large objects that use enough filament to cycle through colors.
- You need standard 1.75 mm PLA compatibility.
Skip if
- You prefer a matte or non-reflective exterior.
- You print tiny models that consume less than 5 meters of filament.
Verdict: Geeetech Silk Rainbow PLA Filament 1kg delivers a five-color progression with a high-gloss finish and +/- 0.03 mm dimensional accuracy. Its 5-meter color transition interval makes it practical for multi-hue decorative prints.
AMOLEN Transparent Multicolor Rainbow TPU (4 x 200g)
Best for: flexible multicolor and transparent 3D prints
- Color Effect
- Rainbow (what this guide is about)
- Material Type
- TPU
- Filament Diameter
- 1.75mm
- Net Weight
- 200g x 4
- Surface Finish
- Smooth
- Color Printing
- Multi-Color
View on Amazon: AMOLEN Transparent Multicolor Rainbow TPU (4 x 200g)
If you need flexible prints with multicolor effects, this AMOLEN pack provides four 200g spools of 1.75mm transparent rainbow TPU. It runs at nozzle temperatures between 190°C and 220°C with an optional heated bed setting between 0°C and 60°C. The bundle suits you if you want flexible material performance for smaller projects without committing to a single full-size 1kg spool.
Pros
- Flexible TPU material provides elastic mechanical properties
- Includes four 200g spools stored in reusable sealed vacuum bags
- Operates at standard nozzle temperatures of 190°C to 220°C with optional bed heating
- Transparent finish highlights the shifting rainbow colors
Cons
- Total weight is 800g divided across four rolls rather than a full 1kg spool
- Requires pre-drying and sealed dry storage to maintain consistent extrusion
Good fit if
- You need flexible, elastic parts rather than rigid PLA models.
- You want smaller 200g spools for multi-color testing without excess leftover material.
Skip if
- You need a continuous 1kg roll for large, uninterrupted print jobs.
- You require standard rigid plastics instead of flexible TPU.
Verdict: AMOLEN Transparent Rainbow TPU 200g 4-Pack is the dedicated flexible option on the list, providing four 200g spools for elastic rainbow prints. It extrudes between 190°C and 220°C to suit FDM setups optimized for flexible filaments.
GIANTARM 1kg Silk Rainbow PLA Filament
Best for: Glossy multi-color prints with standard dimensional tolerances
- Color Effect
- Rainbow (what this guide is about)
- Material Type
- PLA
- Filament Diameter
- 1.75mm
- Net Weight
- 1kg
- Dimensional Accuracy
- +/-0.03mm
- Surface Finish
- Silk
This GIANTARM 1kg spool is a 1.75mm silk rainbow PLA filament engineered for standard FDM 3D printers and 3D pens. It transitions through lime, purple, blue, yellow, and green with a glossy finish. You get a dimensional accuracy of +/-0.03mm and an operating nozzle temperature between 190°C and 215°C. This spool suits you if you want multi-colored decorative prints without manual filament changes or post-print polishing.
Pros
- Dimensional accuracy held to +/-0.03mm across the 1.75mm strand
- Combines lime, purple, blue, yellow, and green into a glossy silk finish
- Low print temperature range of 190°C to 215°C with a 40°C to 60°C bed requirement
- Includes a resealable bag and desiccant after 24-hour factory pre-drying
Cons
- Tolerance of +/-0.03mm is wider than tighter +/-0.02mm options
- Standard PLA formulation lacks high-speed print specifications
Good fit if
- You need a 1.75mm silk PLA with a stated +/-0.03mm dimensional tolerance.
- You want continuous color shifts across lime, purple, blue, yellow, and green.
- You run standard extrusion temperatures between 190°C and 215°C.
Skip if
- You require ultra-tight +/-0.02mm dimensional accuracy for precision mechanical assemblies.
- You need high-speed filament rated for rapid printing above standard PLA speeds.
Verdict: GIANTARM Silk Rainbow PLA Filament 1kg delivers five-color transitions with a +/-0.03mm tolerance and glossy silk finish. It operates at standard 190°C to 215°C nozzle settings for everyday decorative FDM projects.
FLASHFORGE 1.75mm Rapid Rainbow Candy PLA
Best for: high-speed rainbow printing up to 500mm/s
- Color Effect
- Rainbow (what this guide is about)
- Material Type
- PLA
- Filament Diameter
- 1.75mm
- Net Weight
- 1kg
- Max Print Speed
- 500mm/s
- Dimensional Accuracy
- +/- 0.02mm
FLASHFORGE Rapid PLA Rainbow 1.75mm is a high-speed multicolor filament designed for fast production runs. It supports print speeds up to 500mm/s while maintaining a dimensional accuracy of +/- 0.02mm on a standard 1kg spool. You get smooth extrusion managed by CCD diameter tracking without needing parameter tweaks or pre-drying. This spool suits you if you run high-speed printers and want multi-tone rainbow transitions without sacrificing throughput.
Pros
- Supports print speeds up to 500mm/s
- Dimensional accuracy held to +/- 0.02mm via CCD measurement
- Enhanced spool winding to minimize tangles and blockages
- Standard 1kg net weight spool size
Cons
- Diameter is limited strictly to 1.75mm hardware
- PLA formulation offers standard rather than high thermal resistance
Good fit if
- You operate a high-speed 3D printer rated up to 500mm/s.
- You want continuous rainbow color shifts on a 1kg spool.
- You need strict +/- 0.02mm diameter tolerances for reliable feeding.
Skip if
- You use a 2.85mm extruder setup.
- You require high-temperature engineering plastics instead of PLA.
Verdict: FLASHFORGE Rapid PLA Rainbow 1.75mm delivers reliable color transitions at speeds up to 500mm/s with tight +/- 0.02mm tolerance. It is a solid choice when you need rapid throughput without sacrificing layer consistency.
AMOLEN 1kg Silk Rainbow PLA Filament
Best for: glossy multi-color prints on standard FDM printers
- Color Effect
- Rainbow (what this guide is about)
- Material Type
- PLA
- Filament Diameter
- 1.75mm
- Net Weight
- 1kg
- Dimensional Accuracy
- +/- 0.02 mm
- Surface Finish
- Silk
This spool gives you 1.75mm silk PLA filament with a rainbow gradient for FDM 3D printers. The formulation transitions across four colors—orange, yellow, blue, and pink—roughly every 10 meters. It maintains a diameter tolerance of +/- 0.02 mm across its 1kg net weight. You get a glossy finish without post-processing, making it suitable for decorative models and craft projects.
Pros
- Fast color change roughly every 10 meters across four hues
- Tight diameter tolerance of +/- 0.02 mm
- Standard 1.75 mm diameter compatible with FDM printers
- Glossy silk surface finish straight from the build plate
Cons
- 10-meter transition length limits color shifts on very small prints
- No recommended printing temperatures listed in specifications
Good fit if
- You print medium to large FDM models using enough filament to cycle through the 10-meter gradient shifts.
- You require a +/- 0.02 mm diameter tolerance for consistent extrusion.
- You want a shiny silk finish without surface polishing.
Skip if
- You print tiny miniatures requiring rapid color changes in just a few grams of material.
- You need a matte, non-reflective surface finish.
Verdict: AMOLEN 1.75mm Silk Rainbow PLA Filament 1kg delivers dependable extrusion with tight tolerances and glossy four-color transitions every 10 meters. It suits FDM projects where smooth multi-color aesthetics matter.
Flashforge Silk Rainbow PLA Filament 1kg
Best for: smooth, glossy rainbow decorative prints
- Color Effect
- Rainbow (what this guide is about)
- Material Type
- PLA
- Filament Diameter
- 1.75mm
- Net Weight
- 1kg
- Dimensional Accuracy
- +/- 0.02mm
- Surface Finish
- Silk
This 1kg spool of FLASHFORGE Silk Rainbow PLA filament delivers a glossy, smooth exterior for your 3D prints. It features a standard 1.75mm diameter with a tight dimensional accuracy of +/- 0.02mm. Dried for 24 hours before vacuum sealing, it helps minimize bubbling and flow issues. If you want a continuous rainbow color transition paired with a shiny silk surface finish on standard PLA settings, this spool fits your workflow.
Pros
- Dimensional accuracy held to +/- 0.02mm across the spool
- Silk formulation produces a glossy, smooth finish
- Pre-dried for 24 hours and vacuum-sealed against moisture
- Standard 1.75mm diameter fits regular PLA setups
Cons
- No recommended print or bed temperature ranges listed
- Available only as a 1kg spool without smaller trial bundles
Good fit if
- You need +/- 0.02mm dimensional accuracy for consistent feeding
- You want a smooth, glossy silk surface on rainbow prints
- You prefer factory pre-dried and vacuum-sealed material
Skip if
- You prefer a non-reflective matte rainbow finish
- You want smaller sample rolls instead of a full 1kg spool
Verdict: FLASHFORGE Silk Rainbow PLA Filament provides precise +/- 0.02mm dimensional tolerance and pre-dried packaging for clean, multi-color prints. It is an ideal option if you want reliable extrusion alongside a glossy silk finish.
SUNLU 1kg Rainbow PLA Filament
Best for: medium to large decorative FDM prints
- Color Effect
- Rainbow (what this guide is about)
- Material Type
- PLA
- Filament Diameter
- 1.75mm
- Net Weight
- 1KG
- Max Print Speed
- 200mm/s
- Dimensional Accuracy
- ±0.02mm
This 1kg spool from SUNLU gives you standard 1.75mm rainbow PLA engineered with an 8-meter color transition interval. Its ±0.02mm dimensional accuracy provides consistent feeding through standard extruders. The material supports print speeds up to 200mm/s and runs at nozzle temperatures between 210°C and 240°C with bed heat at 50°C to 60°C. It suits you if you produce decorative models or toys on typical FDM hardware.
Pros
- Regular color changes every 8 meters
- Tight ±0.02mm dimensional tolerance
- Supports print speeds up to 200mm/s
- Standard spool dimensions with 55mm hub hole fit most FDM holders
Cons
- 8-meter transition interval requires large models to display multiple colors
- Top rated print speed caps at 200mm/s
Good fit if
- You print mid-size or large objects that consume enough length to transition colors.
- You run standard FDM printers operating at or below 200mm/s.
Skip if
- You print tiny miniatures that will only show a single color band.
- You require filament rated for ultra-high-speed printing beyond 200mm/s.
Verdict: SUNLU 1kg Rainbow PLA Filament provides tight ±0.02mm diameter consistency and predictable 8-meter color intervals for general FDM printing. It serves well for decorative items produced within standard speed envelopes.
Creality 1.75mm Rainbow PLA Filament 1kg
Best for: Colorful FDM prints needing toughness
- Color Effect
- Rainbow (what this guide is about)
- Material Type
- PLA
- Filament Diameter
- 1.75mm
- Net Weight
- 1.0kg
- Dimensional Accuracy
- ±0.03mm
- Printing Technology
- FDM
This Creality filament delivers a rainbow color effect using standard PLA material. It features a 1.75mm diameter with ±0.03mm dimensional accuracy for consistent layer adhesion. The 1.0kg spool offers enhanced toughness and low shrinkage to reduce warping. Its high fluidity supports faster printing speeds. You get reliable performance on most FDM printers, making it a solid option for colorful projects.
Pros
- Enhanced toughness for stable prints
- Low shrinkage reduces warping
- High fluidity for faster speeds
- ±0.03mm dimensional accuracy
Cons
- Standard PLA lacks heat resistance
- No specific high-speed rating listed
- Basic PLA material properties
Good fit if
- You want vibrant rainbow colors
- You need enhanced toughness
- You print on FDM printers
Skip if
- You require heat-resistant materials
- You need specialized high-speed specs
- You prefer flexible filaments
Verdict: Creality CR-PLA Rainbow PLA 1kg provides enhanced toughness and reliable color for FDM printers. It suits users prioritizing dimensional accuracy and warping resistance for everyday colorful prints.
Frucindra Glow in the Dark PLA+ 1.75mm 4-Pack
Best for: small luminous prints across multiple colors
- Color Effect
- Rainbow (what this guide is about)
- Material Type
- PLA+
- Filament Diameter
- 1.75mm
- Net Weight
- 4 x 250g
- Dimensional Accuracy
- ±0.03mm
- Surface Finish
- Glow in The Dark
View on Amazon: Frucindra Glow in the Dark PLA+ 1.75mm 4-Pack
This bundle provides four 250g spools of 1.75mm PLA+ filament totaling 1kg, including green, blue, blue-green, and crystal rainbow. Each spool features phosphorescent material that activates after 30 minutes under sunlight or UV light. With ±0.03mm dimensional tolerance, it suits you if you want glowing multi-color accents across smaller models without committing to a single standard 1kg spool.
Pros
- Four separate 250g spools in distinct luminous colors
- Glow effect charges within 30 minutes under sunlight or UV light
- Standard 1.75mm diameter with ±0.03mm dimensional tolerance
- Each spool is vacuum-sealed with desiccant
Cons
- Small 250g spools cannot support continuous large 1kg prints
- Only one of the four included spools features a rainbow effect
- Luminous glow naturally fades over time and requires periodic light recharging
Good fit if
- You want multiple glow-in-the-dark color options across smaller projects.
- You prefer 250g spools to minimize open filament storage.
- You can charge prints under sunlight or UV light for night visibility.
Skip if
- You need a continuous 1kg spool for uninterrupted large builds.
- You require every spool in the pack to be a multi-color rainbow blend.
Verdict: Frucindra Glow in the Dark PLA+ 1.75mm 4-Pack gives you four distinct phosphorescent color options split into compact 250g spools. It delivers standard ±0.03mm tolerances for specialty night-glow miniatures and varied short-run prints.
Specifications side by side
| Spec | SUNLU Rainbow PLA Filament 1.75mm 1kg | Creality 1kg Rainbow PLA+ Filament | OVERTURE Matte Rainbow PLA Filament 1.75mm 1kg | YOOPAI Rainbow PLA 250g Bundle | YOOPAI Silk PLA+ 1.75mm 8x250g Bundle | SUNLU Rainbow PLA 1.75mm Filament (1kg) | Geeetech Silk Rainbow PLA Filament 1kg | AMOLEN Transparent Multicolor Rainbow TPU (4 x 200g) | GIANTARM 1kg Silk Rainbow PLA Filament | FLASHFORGE 1.75mm Rapid Rainbow Candy PLA | AMOLEN 1kg Silk Rainbow PLA Filament | Flashforge Silk Rainbow PLA Filament 1kg | SUNLU 1kg Rainbow PLA Filament | Creality 1.75mm Rainbow PLA Filament 1kg | Frucindra Glow in the Dark PLA+ 1.75mm 4-Pack |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Material Type | PLA | PLA+ | Matte PLA | PLA | PLA+ | PLA | PLA | TPU | PLA | PLA | PLA | PLA | PLA | PLA | PLA+ |
| Filament Diameter | 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 | 1.75mm |
| Net Weight | 1KG | 1kg | 1kg | 250g | 250gx8 | 1KG | 1 kg | 200g x 4 | 1kg | 1kg | 1kg | 1kg | 1KG | 1.0kg | 4 x 250g |
| Max Print Speed | 200mm/s | not specified | not specified | not specified | not specified | 200mm/s | not specified | not specified | not specified | 500mm/s | not specified | not specified | 200mm/s | not specified | not specified |
| Dimensional Accuracy | ±0.02mm | ±0.02mm | ±0.02 mm | ±0.02mm | ±0.02mm | ±0.02mm | +/- 0.03 mm | not specified | +/-0.03mm | +/- 0.02mm | +/- 0.02 mm | +/- 0.02mm | ±0.02mm | ±0.03mm | ±0.03mm |
| Surface Finish | not specified | not specified | Matte | not specified | Silk | not specified | Silk | Smooth | Silk | not specified | Silk | Silk | not specified | not specified | Glow in The Dark |
| Printing Technology | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | FDM | not specified | not specified | FDM | not specified |
| Color Printing | not specified | not specified | not specified | not specified | Multi-Color | not specified | Multi-Color | Multi-Color | not specified | not specified | Multi-Color | not specified | not specified | not specified | Multi-Color |
| Compatible Material | PLA | PLA | PLA | PLA | PLA | PLA | PLA | TPU | PLA | PLA | PLA | PLA | PLA | PLA | PLA |
| Print Speed | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | 500mm/s | not specified | not specified | not specified | not specified | not specified |
| Features | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | High Speed | not specified | not specified | not specified | not specified | Glow in the Dark |
| Size | 1KG | 1KG | 1KG | 3d filament | 1.75Mm | 1KG | 35.2 Ounce | 200g*4 | 1KG | 1.75Mm | Silk Rainbow 1KG | not specified | 1KG | 2.2lb | 1.75Mm |
| Finish | not specified | not specified | Matte | not specified | Silk | not specified | Silk | Transparent | Silk | not specified | Silk | Silk | not specified | not specified | not specified |
| Color Effect | Rainbow | Rainbow | Rainbow | Rainbow | Rainbow | Rainbow | Rainbow | Rainbow | Rainbow | Rainbow | Rainbow | Rainbow | Rainbow | Rainbow | Rainbow |
| Weight | 2.2 pounds | 2.2 pounds | 2.2 pounds | 2.6 pounds | 5.2 pounds | 2.2 pounds | 2.65 pounds | 2.65 pounds | 2.2 pounds | 2.2 pounds | 2.2 pounds | 2.2 pounds | 2.2 pounds | 2.2 pounds | not specified |
| Dimensions | not specified | 8.26 × 8.26 × 2.79 inches | 8.78 × 2.95 × 8.23 inches | not specified | not specified | not specified | not specified | not specified | not specified | not specified | 8.46 × 8.07 × 2.75 inches | not specified | not specified | 8.27 × 2.76 × 8.27 inches | 7.4 × 6.89 × 6.89 inches |
| Color | Rainbow | Rainbow Pla+ | Matte Rainbow | Pla Bundle-250gx4-2230028 | D-silkpla-250g-g-6 Rainbow Series+gold+silver | Rainbow 01 | 1kg Silk Rainbow | Rainbow | Silk Rainbow | Rainbow Candy | Pink Blue | Rainbow | 1kg Pla Rainbow 03 | 1kg Rainbow | Green/Blue/Blue Green/Rainbow |
| Model | Rainbow PLA 3D Printer Filament | Ender-PLA+ Filament Multi-Color | not specified | 2230028 | SUNLU-Y-SilkPLA-250gx8-Rain-2230053 | Rainbow PLA 3D Printer Filament | not specified | 3DTPUSET | 700-001-1182 | RCUS | #1-3DSRPB | FF-01 | SUNLU Rainbow PLA 3D Printer Filament | CR-PLA_3301010010_us2 | not specified |
If you need storage for your models, see the best nvme SSDs with 3D NAND.
Key Specs for Selecting Rainbow Filaments
-
Check Spool Weight and Size
Spool capacity directly influences how you plan your projects. Standard 1kg spools provide uninterrupted material for large objects, but small models might never reach a color change before finishing. Multi-spool packs divided into 200g or 250g units, such as the YOOPAI Rainbow PLA 250g Bundle, allow you to print smaller decorative items with faster gradient cycles. If you regularly build miniature figures or short-run accessories, smaller spools give you distinct multi-tone shifts without leaving leftover filament on an oversized roll.
-
Evaluate the Exterior Finish
Rainbow filaments come in distinct visual finishes that change how light hits your finished print. Glossy and silk materials create reflective, shiny exteriors that emphasize bright gradients on display pieces. If you prefer low-glare parts that conceal visible layer lines, look for a dedicated matte option like the OVERTURE Matte Rainbow PLA Filament 1.75mm 1kg. Matte formulations produce a soft, frosted texture. Check the listed finish specification to confirm whether a filament gives you specular highlights or a muted, subdued surface.
-
Compare Color Transition Intervals
Transition length determines how many meters of filament must pass through your extruder before the color shifts completely. Short intervals between 5 meters and 8 meters ensure that compact or medium-sized prints display multiple hues across their height. The Geeetech Silk Rainbow PLA Filament 1kg specifies a 5-meter color transition interval, making rapid shifts visible on moderate builds. For very tall vases or heavy decorative objects, longer intervals prevent banding that is too tight. Check the transition metric against your sliced part volume.
-
Verify Diameter Tolerance Ratings
Dimensional accuracy measures the consistency of the filament diameter along the entire spool. Most 1.75mm spools specify either ±0.02mm or ±0.03mm variance. A tight tolerance ensures steady volumetric flow through your hotend, reducing under-extrusion and surface defects. Options like the GIANTARM 1kg Silk Rainbow PLA Filament list a +/-0.03mm standard accuracy for general-purpose printing. If your machine features an all-metal direct-drive setup or operates with tight nozzle clearances, prioritizing tighter ±0.02mm specs helps maintain smooth feeding and uniform layer bonding.
-
Assess Base Material Toughness
Standard PLA works well for visual models, but its brittle nature makes it susceptible to snapping under mechanical stress. When your multi-color parts require extra durability or functional load-bearing capacity, examine whether the spool uses an enhanced formulation. Choosing an option such as the Creality 1kg Rainbow PLA+ Filament provides greater impact resistance while preserving standard PLA printability. Compare the base polymer type on the spec sheet to verify that your chosen rainbow roll matches both the aesthetic and mechanical demands of your project.
-
Identify Specialty Visual Additives
Some rainbow filaments incorporate specialty compounds that introduce functional properties beyond standard visual gradients. Spools featuring phosphorescent pigments absorb ambient light and emit a night-time glow across their color shifts. If you want illuminated nighttime displays, look for listed glow attributes such as those found on the Frucindra Glow in the Dark PLA+ 1.75mm 4-Pack. Be aware that glow-in-the-dark additives are abrasive to brass nozzles. Verify your hotend nozzle composition before running phosphorescent rainbow filaments through standard hardware.
Frequently asked questions
What dimensional accuracy should you look for in rainbow PLA filaments?
Most standard options provide dimensional tolerances between ±0.02 mm and ±0.03 mm. Filaments like Creality Rainbow PLA+ and FLASHFORGE Silk Rainbow PLA specify a tight ±0.02 mm tolerance to maintain steady extrusion. Options such as GIANTARM Silk Rainbow PLA and Frucindra Glow in the Dark list ±0.03 mm. Sticking within these margins prevents under-extrusion and nozzle jams during long decorative prints.
How do color transition lengths affect small versus large prints?
Transition lengths determine how much filament must extrude before the next hue appears. For instance, SUNLU Rainbow PLA and YOOPAI Silk PLA+ feature 8-meter transitions, while Geeetech Silk Rainbow PLA transitions every 5 meters. If you print miniature models, shorter intervals ensure multiple color shifts show up. Larger models consume enough material to display full color gradients even with longer transition spacing.
What is the difference between standard rainbow PLA and PLA+ filaments?
PLA+ offers higher impact resistance and mechanical toughness compared to standard PLA formulations. Products like Creality Rainbow PLA+ and Frucindra Glow in the Dark PLA+ provide enhanced physical durability while keeping the ease of printing typical of standard PLA. If your multi-color model serves functional tasks or needs drop resistance beyond ordinary decorative status, choosing PLA+ gives you that structural reinforcement.
What nozzle temperatures are required for silk and TPU rainbow filaments?
Extrusion temperatures depend on the base polymer and formulation. Standard silk options like GIANTARM Silk Rainbow PLA operate effectively between 190°C and 215°C. In comparison, flexible formulations like AMOLEN Transparent Multicolor Rainbow TPU require a nozzle temperature range between 190°C and 220°C. Matching your hotend temperature to the manufacturer specification ensures consistent melt flow and preserves the desired surface gloss.
Can you print rainbow filament on high-speed 3D printers?
You can print rainbow filament quickly if the specific spool is rated for high-speed hardware. FLASHFORGE Rapid Rainbow Candy PLA explicitly supports print speeds up to 500mm/s while maintaining ±0.02mm dimensional accuracy. Standard decorative rainbow filaments, such as base SUNLU Rainbow PLA, are engineered for standard-speed setups and may suffer layer inconsistencies or feeding issues if pushed beyond normal speeds.
How do surface finishes differ among rainbow 3D printing filaments?
Rainbow filaments come in gloss, matte, transparent, and silk finishes. For example, OVERTURE Matte Rainbow PLA produces a frosted, glare-free exterior that helps disguise layer seams. FLASHFORGE Silk Rainbow PLA and GIANTARM deliver a glossy, reflective sheen across color bands. AMOLEN offers transparent options, allowing light transmission through the shifting colors of flexible parts.
Are there rainbow filaments that glow in the dark?
Yes, certain rainbow filaments combine phosphorescent additives with multicolor gradient transitions. AMOLEN Glow in the Dark Rainbow PLA provides a four-color sequence that illuminates after light exposure, operating at standard 190°C to 220°C extrusion temperatures. Frucindra Glow in the Dark PLA+ also offers phosphorescent properties across compact 250g spools with a ±0.03mm tolerance for night-glow projects.