Sunlu Promo Codes and Coupons September 2025

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Sunlu

Sunlu.com is a manufacturer and retailer of 3D printing supplies, specializing in filaments, 3D printers, and related accessories. Founded in 2013, they've become known for offering budget-friendly 3D printing materials while maintaining decent quality standards. They serve both hobbyist and professional markets with a wide range of PLA, ABS, and specialty filaments.

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Today's Sunlu discount codes

TOP PICK
Sunlu logo

3% off

7 uses
high

worked 6 months ago

Save 3% off with coupon
Sunlu logo

3% off

6 uses
high

worked 3 months ago

Score 3% off with coupon on $300+ orders
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15% off

12 uses
high

worked 3 months ago

15% Off Storewide at Sunlu
Sunlu logo

25% off

3 uses
high

worked about 1 month ago

25% Off Storewide at Sunlu

Featured Sunlu Products

SUNLU Transparent 3D Printer Enclosure

SUNLU Transparent 3D Printer Enclosure

[Dustproof insulation] With the same heat preservation and dustproof effect of flame retardant aluminum foil cloth heat preservation cover on the market, but with more easy to clean characteristics (acrylic + PC material) [Global visibility] Transparent top cover and front design, internal status at a glance, refusing to print anxiety (traditional thermal cover is too dark inside) [Flat and beautiful] The internal and external surfaces are smooth and flat, more beautiful than flame retardant fabric insulation cover [Extra Space] Both the dry box and AMS lite are “protected” together with the printer. Assembly Steps: Step 1: Take 2 Side columns (614.5mm) and insert them into both sides of the Side panel (570 x 600mm) and fix them with screws. (The side of the Side column with the screw holes is facing upwards). Step 2: Take out the Backplate (570×600mm) and connect it with the Side panel (570×600mm) and fix it with screws. Step 3: Remove the other Side panel (570×600mm), connect it with the Backplate (570×600mm) and fix it with screws. Step 4: Install the Front cover (570×600mm). Step 5: Finally, install the Top cover (600×600mm) and fix it with screws to complete the assembly. Packing Parameters:① Side column (614.5mm) *4② Top cover (600×600mm) *1⑱ Backplate (570×600mm) *4④ Side panel (570×600mm) *2â‘€ Front cover (570×600mm) *1â‘„ Screws *20

USD 69.99

[12th Prime Deal] High Speed PLA+(PLA Plus), HS_PLA+ 3D Printer Filament 1KG

[12th Prime Deal] High Speed PLA+(PLA Plus), HS_PLA+ 3D Printer Filament 1KG

[SUNLU 100% Wound Neatly Filament] SUNLU-owned tech has mastered advanced technology and produced 100% Neatly Wound PLA PLUS/PLA+ Filament, which is impossible for other brands. No knot, no winding, improve printing efficiency. [Good comprehensive mechanical properties] Particularly drop-resistant, impact strength up to 8KJ/m2, which is 2~3 times more than other PLA or PLA+ on the market, the color is brighter, and it has many advantages, Clog/Bubble/Tangle/Warping/Stringing free, easy to use, better layer adhesion. [1.75mm Diameter] Dimensional Accuracy +/- 0.02mm. SUNLU filament has wide compatibility due to the small diameter error, it's suitable for almost all 1.75mm FDM 3D printers. [Spool Diameter] Spool Diameter: 8.00", Spool Width: 2.50", Spool Hub Hole Diameter: 2.20". The size of the SUNLU filament spool is suitable for hanging on many 3D printers. [Strong Compatibility] SUNLU 3D Filament is not only applicable to all SUNLU 3D printing products: FDM 3D Printer, 3D Printer Accessories, and Filament Dyer, but also applicable to almost all FDM 3D printers of other brands. Diameter: 1.75MM ±0.02MMPlate temperature: 50-60℃N.W.: 1 KG / rollG.W.: 1.3 KG / rollLength: 1.75MM(1KG)=330M Printing speed:50-150mm/s at printing temp 200-215℃, 150-300mm/s at printing temp 215-230℃, 300-600mm/s at printing temp 230-260℃,

USD 12.99

SUNLU AMS Heater, Upgraded your Bambu AMS, Enables Drying while Printing

SUNLU AMS Heater, Upgraded your Bambu AMS, Enables Drying while Printing

Drying and printing are performed simultaneously. This is a heater that can upgrade the upper cover of the AMS. Compared to the traditional printing process using the AMS, which requires drying before printing, the upgraded version allows for simultaneous printing and drying. High-efficiency heating with uniform temperature distribution, reaching 70°C within 20 minutes. The dual airflow design ensures even heat circulation, preventing localized overheating of materials and effectively reducing the risk of thermal deformation. High compatibility: After upgrading to the AMS Heater, it supports stacked 16-color printing and saves space. Upgrades the heater for the AMS Generation 1 upper cover, seamlessly integrating with the Generation 1 seal strip and fully compatible with the Generation 1 seal preservation function. Simple upgrade process: Loosen—disassemble—tighten, completed in just 2 minutes. Intelligent humidity monitoring:  ① Humidity mode default heating temperature: 55°C—users can adjust and save the temperature.  ② Default operating time: 6 hours.  ⑱ After the countdown ends, the device does not shut down; it automatically starts heating when humidity rises to 50% and stops heating when humidity drops to 20%.  ④ In rH mode, users can adjust humidity (range: 25%–50%).  After adjustment, the humidity automatically starts using this set value. Safe and Reliable:PTC heating. Dual-level protection with a temperature control switch. Software-based intelligent temperature control, real-time temperature monitoring, and automatic control of the heating system. Maximum drying temperature of 70°C. Alarms are triggered when the temperature exceeds the set value by 10°C, when the temperature fails to rise, or when the fan malfunctions. The device operates according to the set time and automatically shuts down when the time reaches zero. Product dimensions 363mm × 278mm × 131mm (LWH) Outer box dimensions 415mm × 316mm × 190mm Maximum reel size φ250mm × 153mm (1kg × 4) Product net weight 1.7KG Temperature setting range 35°C–70°C Humidity display range See display: 10%-90% Time setting range 0-99H Power input specifications AC 110V 60Hz or AC 220V 50Hz Maximum operating current 2.2A@230V 4.15A@120V Maximum operating power 500W Standby power 0.6W Filament outlet hole compatible wire diameter φ1.75mm

USD 109.99

[Pre-order now] SUNLU AMS Heater, Upgraded your Bambu AMS, Enables Drying while Printing

[Pre-order now] SUNLU AMS Heater, Upgraded your Bambu AMS, Enables Drying while Printing

Drying and printing are performed simultaneously. This is a heater that can upgrade the upper cover of the AMS. Compared to the traditional printing process using the AMS, which requires drying before printing, the upgraded version allows for simultaneous printing and drying. High-efficiency heating with uniform temperature distribution, reaching 70°C within 20 minutes. The dual airflow design ensures even heat circulation, preventing localized overheating of materials and effectively reducing the risk of thermal deformation. High compatibility: After upgrading to the AMS Heater, it supports stacked 16-color printing and saves space. Upgrades the heater for the AMS Generation 1 upper cover, seamlessly integrating with the Generation 1 seal strip and fully compatible with the Generation 1 seal preservation function. Simple upgrade process: Loosen—disassemble—tighten, completed in just 2 minutes. Intelligent humidity monitoring:  ① Humidity mode default heating temperature: 55°C—users can adjust and save the temperature.  ② Default operating time: 6 hours.  ⑱ After the countdown ends, the device does not shut down; it automatically starts heating when humidity rises to 50% and stops heating when humidity drops to 20%.  ④ In rH mode, users can adjust humidity (range: 25%–50%).  After adjustment, the humidity automatically starts using this set value. Safe and Reliable:PTC heating. Dual-level protection with a temperature control switch. Software-based intelligent temperature control, real-time temperature monitoring, and automatic control of the heating system. Maximum drying temperature of 70°C. Alarms are triggered when the temperature exceeds the set value by 10°C, when the temperature fails to rise, or when the fan malfunctions. The device operates according to the set time and automatically shuts down when the time reaches zero. Product dimensions 363mm × 278mm × 131mm (LWH) Outer box dimensions 415mm × 316mm × 190mm Product net weight 1.7KG Temperature setting range 35°C–70°C Humidity display range See display: 10%-90% Time setting range 0-99H Power input specifications AC 110V 60Hz or AC 220V 50Hz Maximum operating current 2.2A@230V 4.15A@120V Maximum operating power 390W Standby power 0.6W Rated power 220W

USD 109.99

What Sunlu coupons are available today?

We track so many discount codes. Read about today's Sunlu coupon statistics.

124
Sunlu deals available today
12
Active Sunlu codes
3% off
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Note: Our community tests every Sunlu promo code and shares results in real-time. Check success rates and shopping tips in the activity feed to find what works best for your purchase.
Sunlu logo

25% off

2 uses
high

worked about 1 month ago

25% Off Storewide at Sunlu
Sunlu logo

25% off

5 uses
high

worked about 1 month ago

25% Off Storewide at Sunlu
Sunlu logo

25% off

11 uses
high

worked about 1 month ago

25% Off Storewide at Sunlu
Sunlu logo

25% off

5 uses
high

worked about 1 month ago

25% Off Storewide at Sunlu

More Sunlu Products

SUNLU SL-200 3D Printing Pen, Best Gifts for Kids

SUNLU SL-200 3D Printing Pen, Best Gifts for Kids

Easy Use, Safe for Kids, Smooth Extrusion, Safe Nozzle Design and Lightweight Compact and Elegant DesignThe SL-200 3D Printing Pen features a sleek and compact design, weighing just 52.5g. Its dimensions of 172×26×23.5mm make it easy to handle and perfect for bringing intricate designs to life.  Versatile Filament CompatibilityThis 3D printing pen is compatible with both PLA and ABS filaments (1.75±0.02mm). Switch between different materials effortlessly with a one-press material swap feature for diverse creative projects. Recommended temperature settings are ABS: 180-210℃, and PLA: 160-180℃. User-Friendly OperationThe pen is designed with multiple buttons for easy and intuitive handling. It also includes a front cover with a knob, making maintenance and filament replacement quick and hassle-free. Speed control is made more precise with an adjustable slider, giving you fine-tuned command over your drawing pace. Comprehensive Package and CertificationsYour SL-200 package includes everything you need to start creating immediately: the pen itself, a power adapter (EU, US, UK standards available), a USB data cable, a user manual, a brochure, two packs of PLA filament, and two finger sleeves. The product is ROHS, FCC, and CE certified, ensuring top-notch quality and safety. Ideal Gift with WarrantyThe SL-200 3D Printing Pen comes in an elegant gift box, making it an ideal present for artists, hobbyists, and kids. It includes a one-year warranty, with coverage for manufacturing defects but excludes damage from non-original filament or misuse. Package Includes: 1* SL-200 3D Printing Pen Note: Do not include an adapter 1* USB Cable 1* User Manual 1* Brochure 2* Packs of PLA Filament 2* Finger Sleeves

USD 15.99

SUNLU FilaDryer E2, Up to 110℃, Professional Drying and Annealing, Born for Engineering 3D Printing Filaments

SUNLU FilaDryer E2, Up to 110℃, Professional Drying and Annealing, Born for Engineering 3D Printing Filaments

[SUNLU FilaDryer E2] The newest pop-up in 2025, made for engineered materials, helps infinite creation, drying and annealing in one. [Superior and Efficient Annealing] Up to 110°C, it can anneal 99.99% of engineering materials on the market, allowing the materials to fulfill their potential and giving your model excellent properties such as extraordinary impact resistance and toughness. Suitable for such as ABS, ABS-CF, ASA, PC, flame retardant PC, PC-ABS, PC-PBT, CoPA, PA6-GF, PA6-CF, PA12-CF, PA612-CF, PA12 etc... [Fast and Efficient Drying] 500W PTC ultra-high heating power makes your creation a step faster. It takes only 20 minutes to heat up to 50℃ at room temperature and 30 minutes to heat up to 70℃! Temperature can reach up to 110℃ (high temperature drying needs to take into account the temperature resistance of the filament spool) [Excellent Airtightness, Super Insulation Effect] One-piece silicone plug over the line hole, the cover plate is equipped with sealing silicone strips, to isolate the outside water vapor into the chamber. The all-round dual-chamber design at the top, middle and bottom realizes the heating temperature exceeding 100°C. Combined with the innovative closure system, the annealing process is more perfect, solving the two needs of annealing and drying in one machine. [Extra Large Interior Space, Super Adaptability] The maximum compatible spool size is Ί250mm*153mm, which is suitable for most of the regular spools on the market. Tested, it can hold 2 reels of regular 1KG spools, 2 reel of regular 2KG spools or 1 reel of regular 3KG spools. (Note that the test spools are SUNLU spools, other brands of spools will have slight differences, but basically compatible, when using the need to pay attention to the size of the spool.) [Strong Compatibility, Adapts to 99% of the use scenarios] Can be applied to both engineering materials and conventional materials. Built-in preset filament settings, one click to apply the preset. The wire diameter is compatible with most of the materials on the market (Ί1.75mm, Ί2.85mm), and the Teflon tubing included with the product is Ί4*Ί3mm in size and 8cm*2 and 1m*2 in length. [Strong Safety, No More Worries] Intelligent protection system, two-level temperature control switch, over-temperature will be disconnected, cooling will be restored. Double-layer heat insulation, when the internal temperature is >100℃, the external touch temperature is only <60℃. Fireproof material grade [Inspire Engineering Material Potential] Annealing significantly enhances the impact resistance and durability of engineering materials, allowing you to unlock engineering-grade performance in every creation, which can be applied to: drone accessories, helmets, screws and nuts, blower pipes, etc. Models that need to withstand high-intensity impact and durability. Technical Specifications Product Name / Model Filament Dryer E2 Package Dimensions 454mm×276mm×362mm(LWH) Product Dimensions 400mm×220mm×307mm(LWH) Internal Dimensions 372mm×192mm×255mm(LWH) The maximum size of the spool that can be accommodated(take SUNLU's spools for example) Ί250mm*153mm (1KG×2 or 2KG×2 or 3KG×1) Net Weight / Gross Weight 6.1KG / 7KG Operating Environment Temperature: 10℃-35℃ RelativeHumidity: ≀95% Working Temperature Range 35℃-110℃ Humidity Display Range 10%-90% (Accuracy±10%) Note 1: When working temperature≄80℃, humidity sensor will start protection   mode (displays<10%humidity) Note 2: After temperature drops to 70℃, humiditysensor recovers original   accuracy after about 20 hours. Timer Range 0-99 Hour Power Input (Pleaseverify local voltage compatibility) Please select the voltage basedon the silk-screen marking on the sideof the product Maximum Operating Current 2.2A @230V 4.2A@120V Standby Power ≀1W Compatible Filament Diameters Ί1.75mm/Ί2.85mm/Ί3.0mm

CAD 499.03

[12th Prime Deal] High Speed PLA+ 2.0(HSPLA Plus 2.0), High Speed 3D Printer Filament 1KG

[12th Prime Deal] High Speed PLA+ 2.0(HSPLA Plus 2.0), High Speed 3D Printer Filament 1KG

[Breakthrough 600mm/s Ultra-Fast Printing]Unleash unprecedented speed without compromising quality! SUNLU High Speed PLA+ 2.0 revolutionizes rapid prototyping and production, supporting blazing speeds of up to 600mm/s at 230–260°C. Engineered with advanced flow dynamics, it maintains flawless layer adhesion and surface finish even at extreme velocities—perfect for high-efficiency makers and industrial workflows. [Unbeatable Toughness & Impact Resistance]Upgraded for rugged durability, HyperSpeed PLA+ 2.0 delivers 10x the strength of standard PLA, with enhanced flexibility to resist cracks, drops, and impacts. Ideal for functional parts, tools, or outdoor gear that demands both speed and resilience. [Smooth Flow, Zero Clogs – Print Faster, Cleaner]Optimized viscosity ensures bubble-free, jam-resistant extrusion at any speed. From intricate details at 50mm/s to lightning-fast 600mm/s builds, enjoy consistent flow, minimal stringing, and crisp dimensional accuracy (±0.02mm). [Wide Compatibility & Hassle-Free Winding]Featuring SUNLU’s proprietary 100% Neatly Wound Spool Technology, this tangle-free filament fits almost all 1.75mm FDM printers. Spool dimensions (8" diameter, 2.5" width, 2.2" hub) allow easy mounting, while its low-warp formula works flawlessly with or without enclosures. [Smart Settings for Speed & Precision]Maximize performance with recommended temps: Nozzle: 200–260°C (speed-optimized tiers: 200–215°C: 50–150mm/s 215–230°C: 150–300mm/s 230–260°C: 300–600mm/s) Bed: 55–65°C (no adhesive needed). Why Choose High Speed PLA+ 2.0?✅ 600mm/s Certified – Redefine productivity limits✅ Industrial-Grade Toughness – Survives drops, bends, and stress✅ Foolproof Reliability – Clog/bubble/tangle/warp-free printing✅ Vivid Colors & Precision – Bright hues, ±0.02mm accuracy Perfect for: Rapid prototyping, mass production batches, functional engineering parts, cosplay props, and high-speed creative projects.Compatible with: All SUNLU and third-party FDM printers, dryers, and accessories. Elevate your 3D printing game with SUNLU High Speed PLA+ 2.0—where speed, strength, and simplicity converge for unmatched print performance.

CAD 16.62

3KG Large Spool PLA Series 3D Printer Filament Collection

3KG Large Spool PLA Series 3D Printer Filament Collection

【3KG Large Filament Spool Diameter】With 3KG large spool, keep printing without replace filament. The size of the SUNLU filament spool is suitable for hanging on a lot of FDM 3D printers. 【SUNLU PLA 3D Printer Filament】PLA material is the perfect choice for 3D printing enthusiasts! SUNLU PLA filament is reliable, versatile, and easy to use. No clogs, bubbles, or tangles, its excellent layer adhesion ensures high-quality prints every time. Ideal for beginners and experienced users. 【Neatly Wound 3D Filament Spool】SUNLU's self-developed neat winding device ensures that the filament is easy to use, with a 100% neat rate that reduces the risk of tangles and jams, and provides a smoother and more efficient 3D printing experience. 【Recommend Settings】To achieve the best printing results with SUNLU PLA filament, we recommend printing at a nozzle temperature of 200-230°C, a bed temperature of 50-65°C, and a printing speed of 50-100mm/s. 【1.75 mm Accuracy PLA Filament】SUNLU 3D printer filament dimensional Accuracy +/- 0.02mm. SUNLU filament has wide compatibility due to the small diameter error, making it suitable for almost all 1.75mm FDM 3D printers.

PLN 109.87

Sunlu logo

25% off

11 uses
high

worked about 1 month ago

25% Off Storewide at Sunlu
Sunlu logo

25% off

19 uses
high

worked about 1 month ago

25% Off Storewide at Sunlu
Sunlu logo

25% off

12 uses
high

worked about 1 month ago

25% Off Storewide at Sunlu
Sunlu logo

25% off

15 uses
high

worked about 1 month ago

25% Off Storewide at Sunlu

Sustainability Score

42%
Sunlu shows significant room for improvement in sustainability practices. While they produce some recyclable materials, they lack transparency about their manufacturing processes and supply chain. There's limited information about their environmental impact reduction efforts, worker conditions, or sustainability commitments. Their packaging could be more eco-friendly, and they don't provide clear documentation about their waste management practices or energy usage in production facilities.

About Sunlu

4.0 (3)

FAQs

Sunlu regularly offers sales during major shopping events like Black Friday, Cyber Monday, and Prime Day. They also frequently run flash sales and seasonal promotions, typically at the end of each quarter.

The best deals are usually found during Black Friday (November) and their anniversary sale (usually in July). They also offer significant discounts during holiday seasons and when launching new products.

Yes, Sunlu offers volume discounts for bulk purchases, typically starting at 5+ spools of filament. They also have a rewards program that provides additional discounts for regular customers.

You can subscribe to their newsletter for exclusive deals, follow their social media accounts, or check their website's 'Deals' section regularly. They also frequently distribute discount codes through their YouTube partners.

In the past month, Sunlu has launched 0 new promo coupons for shopper discounts. This indicates that Sunlu does not provide regular opportunities for customers to save money on their purchases.

On average, Sunlu provides 4.5 discount coupons each month. Based on historical data, the average time between Sunlu coupon releases every 7 days. However, this rate depends on various factors such as seasonal promotions (Black Friday, Cyber Monday, etc.), product launches, or other marketing initiatives. To stay informed about upcoming discounts and promotions, we recommend checking Sunlu website regularly, subscribing to email newsletters, and following them on social media.

Sunlu is offering 12 working store-wide codes, however they are also offering 112 additional discount codes with a best discount of 3% off

terra.coupons is the #1 provider of discount codes for your favorite retailers, such as Sunlu. As a crowd-sourced platform for coupon codes, we accurate codes for over 10,000 stores. Save time and avoid expired codes by checking terra.coupons for the latest Sunlu discount codes.

Curated by

Aleksa P.

Aleksa P.

Deal Curator

Last updated September 2025

Aleksa is a deal finder from the tech-savvy city of Austin, Texas. A keen coder by day and a discount guru by night, Aleksa checks back regularly to update you with new deals.

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