The Best 20 Watt Laser Diode of 2022 – Reviews & Buying Guide

After hours researching and comparing all models on the market, we find out the Best 20 Watt Laser Diode of 2022. Check our ranking below.

2,362 Reviews Scanned

Rank No. #1

LASER TREE Laser Engraver Module, 20000mW(20W) Optical Power, Laser Engraver Cutter Module with Air Assist, High Accuracy Quad-Compression Spot Laser Head, Engraving 340+ Colors On Metal Steel

🏆【POWERFUL LASER MODULE】Experience the true power of LASER TREE's 20000mW laser module with an optical power output of up to 24000mW. High power laser cutter module cutting 10mm bass plywood by one pass, and cutting 8mm black acrylics in one pass. Engraving speed up to 24000mm/min. Whether you're a professional or a hobbyist, this powerful laser module will help you achieve the results you need
🏆【ULTRA-FINE COMPRESSED SPOT】LASER TREE 20W（20000mW） laser head with 4pcs 5W beam-compressed laser diodes. Quadruple compression spot (0.08*0.08mm) makes the engraving and cutting more powerful and precise. It is able to cut 30mm wooden boards, 30mm acrylic sheets, and 0.1mm stainless steel. With the ability to engrave over 340 colors on metal stainless steel, the 20000mW module gives you more possibilities for your creations. Class level: Class 4
🏆【EFFICIENT & SAFETY】Blue light laser module with a professional air assist system can make cutting deeper and get cleaner material edges. Built-in fan cooling system, fan Speed 10000 rpm. Cool efficiently to prolong service life. Original diode, lifetime up to 20,000 hours. The red laser shield filters 97% of UV rays to protect your eyes and those around you. And a 3-in-1 bracket for fan protection, fixed wires, and air ducts has been added to the top of the laser module.
🏆【WIDE COMPATIBILITY & EASY TO USE】Compatible with PWM-controlled laser engraving machines, laser cutting machines, CNC machines, and 3D printers. The included accessories can be easily integrated into your existing machine. Equipped with adapter board & power adapter that are compatible with different voltages and pins between the machine and the module. The focus lever design makes it easier to adjust the focus. And the mounting bracket makes it easy to mount the module on the machine.
🏆【TECHNICAL SUPPORT & AFTER SERVICE】Please ensure your engraving machine can provide at least a 24V 4A power supply. If not, please use the driver adapter & power adapter we supply. If you need pre-sale consultation or encounter any problems, contact us on Amazon or the website. Note: Regular cleaning and maintenance of the lenses will maintain good cutting results and obtain a longer service life.

SaleRank No. #2

DLC - 120W Laser Engraving Cutting Module with Air Assist, 20W(20000mW) Output Power,Built-in FAC,Compressed Spot CNC Carving DIY Laser Master for Laser Cutter Laser Engraver Machine - Class 4

POWERFUL LASER MODULE - The diode laser module has 120W machine power and 20000mW optical output laser power. High power laser cutter module cutting 25mm Pinewood by One Pass, and cutting 18mm black acrylics in one pass. Engraving speed up to 24000mm/min. Whether you're a professional or a hobbyist, this powerful laser module will help you achieve the results you need
PROFESSIONAL AIR ASSIST & HEAT DISSIPATION DESIGN - DLC air assist laser modules can make material edges cleaner and clearer when cutting/engraving. It can increase laser cutter efficiency to save time and enjoy concise beauty (The package includes an Air Assit Kit). This laser cutter module ORIGINAL DIODE with FAC and built-in fan cooling system.
EASY TO USE - Multi-hole position on the back of laser engraver module, easy to install on different laser cutting and engraving machine stands. The control line installation method is plug-and-play. Excellent compatibility with 12V and 24V DIY machines and other brand laser engraving machines, laser cutting machines, CNC routers, and 3D printer machines.
ULTRA-FINE COMPRESSED SPOT - DLC 20W(20000mW)laser head with 4pcs 5W beam-compressed laser diodes. Quadruple compression spot (0.06*0.06mm) makes the engraving and cutting more powerful and precise. It is able to cut 25mm Pinewood by One Pass, 18mm acrylic sheets, and 0.1mm stainless steel.
【24 Hours After Sale】The laser module Universally applicable to 12V and 24V.DLC is committed to providing customers with high-quality after-sales service, if you encounter any problems when using our products, you can contact our after-sales service team at any time. Our professional technicians will provide you with solutions and help in time.

Rank No. #3

Longer 20W Laser Engraver Module, DIY laser head for Laser Engraver, Eye Protection, Compatible with RAY5 Series and B1Series

Strong Cutting Ability: The Longer Ray5 features a powerful 20W optical output laser module equipped with advanced laser enhancement technology, significantly boosting its cutting capacity. It can cut 0.59" (15mm) pine wood and 0.31" (8mm) acrylic in a single pass, and up to 25mm wood and 35mm acrylic with multiple passes. Additionally, it can precisely cut 0.002" (0.05mm) stainless steel.
Wide Applicable Materials: Support engraving materials： All wood, paper, plastic, leather, PCB board, aluminum oxide, non-reflective plating, and lacquered metal. Support cutting materials： Cardboard, non-woven fabric, light wood, Acrylic material, and thin plastic board. (Unable to engrave: blue/purple/white/transparent material, aluminum without oxide layer.)
Eye Protection : The laser head is equipped with the latest panoramic filter glass protective cover, which plays a good role in protecting the eyes, filtering 97% of ultraviolet rays, no need to wear goggles, and the engraving is clear. Lower your goggle cost and make it more convenient. And the service life of the laser is about 20,000 hours.
Wide Application Scene : Below is a list of some of the most popular laser engraving ideas: Company logos, Company logos, Signage, Christmas ornaments, Spice jars, QR codes and barcodes for clients, Photo engraving, Personalized products, Business cards, Wine glasses, Key chains, Customized jewelry, Theme toy boxes, Coasters, Artwork, Celebration and special occasion gifts, custom metal cups.

SaleRank No. #4

AENBUSLM 160W Laser Module with Air Assit for Laser Cutter & Laser Engraver Machine,20W(20000mW) Output Power,Built in FAC,Ultra-Fine Compressed Spot CNC Carving DIY Laser Master - Class 4

POWERFUL LASER MODULE - The AENBUSLM diode laser module has 120W machine power and 20000mW optical output laser power. High power laser cutter module cutting 25mm Pinewood by One Pass, and cutting 18mm black acrylics in one pass. Engraving speed up to 24000mm/min. Whether you're a professional or a hobbyist, this powerful laser module will help you achieve the results you need
PROFESSIONAL AIR ASSIST & HEAT DISSIPATION DESIGN - DLC air assist laser modules can make material edges cleaner and clearer when cutting/engraving. It can increase laser cutter efficiency to save time and enjoy concise beauty (The package includes an Air Assit Kit). This laser cutter module ORIGINAL DIODE with FAC and built-in fan cooling system.
EASY TO USE - Multi-hole position on the back of laser engraver module, easy to install on different laser cutting and engraving machine stands. The control line installation method is plug-and-play. Excellent compatibility with 12V and 24V DIY machines and other brand laser engraving machines, laser cutting machines, CNC routers, and 3D printer machines.
ULTRA-FINE COMPRESSED SPOT - DLC 20W(20000mW)laser head with 4pcs 5W beam-compressed laser diodes. Quadruple compression spot (0.06*0.06mm) makes the engraving and cutting more powerful and precise. It is able to cut 25mm Pinewood by One Pass, 18mm acrylic sheets, and 0.1mm stainless steel.
【24 Hours After Sale】The laser module Universally applicable to 12V and 24V.AENBUSLM is committed to providing customers with high-quality after-sales service, if you encounter any problems when using our products, you can contact our after-sales service team at any time. Our professional technicians will provide you with solutions and help in time.

SaleRank No. #5

Comgrow Z1 Pro 20W Output Laser Engraver for Wood and Metal with Air Assist,Laser Cutter and Engraver Machine 25000mm/Min Engraving Speed and App Control,Engraving 380+ Colors On Metal Steel

20000mW Powerful Cutting Capacity: Comgrow's upgraded Z1 PRO is equipped with a powerful laser module with 20000mW output power, utilizing state-of-the-art laser enhancement technology, which can simultaneously cut 20mm Birch wood, 15mm black acrylic sheet, and even 0.05mm stainless steel sheet. Meet more of your engraving needs, including metal, paper, bamboo, wood, leather, PCB, aluminum oxide, glass and more.
Extremely Fine Engraving Capability: The Z1 PRO 20000mW laser head utilizes 0.08mm compressed spot technology to engrave ultra-fine laser focus areas of 0.08-0.1mm. With a maximum processing resolution (DPI) of 1000, your wood carvings will be crystal clear. The newly upgraded 32-bit chipset motherboard with built-in 256-bit color mapping allows for finer, higher-contrast engraving, so your engravings aren't just black.
High Speed Laser Engraver: The upgraded Z1 PRO can reach a maximum engraving speed of 25000mm/min, which can meet your high speed engraving needs and help you save time. The Z1 PRO is also equipped with an emergency stop button, which allows you to stop the machine at any time in the event of an accident, making your engraving work safer.
Equipped with Comgrow 30L/Min Air Assist Device: it can effectively reduce the surface temperature during engraving and cutting, make the edges more clean and sharp, and provide simple and beautiful results. And the laser head is equipped with an auxiliary nozzle that protects the lenses, to guarante lifetime of the laser head.
Higher Workspace: Z1 PRO with Six leg stand for extra height and gives customers 150 mm or six inches of workable height. The added height supports Comgrow and most of the rotary attachment engraving jobs on the market. You can let your creativity run wild on many columns, such as wine glasses, snowmen, baseball bats, including columns, so you can carve more things and create more possibilities.

Rank No. #6

160W Laser Engraving Cutting Module with Built-in Air Assist, 20W(20000mW) Output Power,Built-in FAC,Compressed Spot CNC Carving DIY Laser Master for Laser Cutter Laser Engraver Machine - Class 4

POWERFUL LASER MODULE - The diode laser module has 160W machine power and 20000mW optical output laser power. High power laser cutter module cutting 25mm Pinewood by One Pass, and cutting 18mm black acrylics in one pass. Engraving speed up to 12000mm/min. Whether you're a professional or a hobbyist, this powerful laser module will help you achieve the results you need
PROFESSIONAL AIR ASSIST & HEAT DISSIPATION DESIGN -Air assist laser modules can make material edges cleaner and clearer when cutting/engraving. It can increase laser cutter efficiency to save time and enjoy concise beauty (The laser module Built-in Air Assit Kit). This laser cutter module ORIGINAL DIODE with FAC and built-in fan cooling system.
EASY TO USE - Multi-hole position on the back of laser engraver module, easy to install on different laser cutting and engraving machine stands. The control line installation method is plug-and-play. Excellent compatibility with 12V and 24V DIY machines and other brand laser engraving machines, laser cutting machines, CNC routers, and 3D printer machines.
ULTRA-FINE COMPRESSED SPOT - 20W(20000mW)laser head with 4pcs 5W beam-compressed laser diodes. Quadruple compression spot (0.06*0.06mm) makes the engraving and cutting more powerful and precise
【24 Hours After Sale】The laser module Universally applicable to 12V and 24V. is committed to providing customers with high-quality after-sales service, if you encounter any problems when using our products, you can contact our after-sales service team at any time. Our professional technicians will provide you with solutions and help in time.

SaleRank No. #7

Gluwphy Laser Engraver Machine 20000mW(20W) Enclosed Diode Laser Cutter for Beginner, Class 1 Safety Laser Engraving Machine for Wood, Metal, Acrylic, with Air Assist, Honeycomb, Air Filter, Black

【Diode 2.5 X Faster】The laser engraver machine combines laser engraving and laser cutting in one. Cutting wood, acrylic thickness of 10mm. The spot size is only 0.06 x 0.04 mm with a movement precision of 0.01 mm and 400 mm/second. Produces fine works, one-shot engraving success, zero waste.
【Precise Auto-Focus】The Gluwphy engraver has a precise Auto Focus feature. It can finely handle small items such as rings and jewelry. No need to focus manually. This saves 90% of your time. It is very useful for beginners.
【Air Assist System】The Gluwphy AIM laser engraving and cutting machine is equipped with intelligent air assists. It provides up to 30 liters/minute of airflow to prevent yellowing of the surface of the engraving object.
【Class 1 Laser Safety Level】The enclosed laser engraver meets Class 1 laser device safety requirements. An upgraded 5000 RPM powerful Turbo Fan can remove dust and debris from the box. HEPA filter protects you and your family's health.
【Side Light Output Patent】Side-Light Output technology. No need to buy expensive base. Enables self-rotation of the lens unit. Saves 60% of accessory space and installation time. Reduces the risk of damage due to frequent manual intervention.

SaleRank No. #8

xTool F1 Ultra Deluxe Bundle, 20W Fiber & Diode Dual Laser Engraver with Auto Conveyor, RA2 Pro, SafetyPro AP2 Smoke Purifier, Auto Streamline Production 3D Laser Engraving Machine with Smart Camera

The Ultimate Production Solution Set: On-site customization or efficient studio production, this set equips you both to maximize your profits. xTool's Auto Streamline Production (powered by F1 Ultra's camera & conveyor) automates engraving with 10,000mm/s speed, finish a batches in minutes. Engrave curved surfaces with the RA2 Pro. Smoke purification & F1 Ultra's safety features ensure clean, customer-friendly operation.
Support almost all materials Ultra-Fast: Introducing the world's first 20W fiber and diode dual lasers, achieving speeds up to 10,000mm/s. The fiber laser can engrave all metals (gold, silver, copper, stainless steel, brass, titanium, etc.) in seconds, while the diode laser excels on wood, acrylic, leather, glass, rubber, fabric, and more.
3D Embossing and Deep Engraving: With 20W power in both fiber and diode lasers, the F1 Ultra laser engraving machine handles intricate, multi-level 3D engraving and deep engraving on various materials, including metal, wood, and rock, creating high-value items.
Revolutionary Working Area and HD Resolution: The F1 Ultra boasts the largest desktop fiber laser engraver working space at 220mm x 220mm, expandable to 220mm x 500mm if with the auto conveyor. This enlargement doesn't compromise the detail and precision of HD photo engraving in any corner, unlike other fibers with switchable lenses.
Versatile Cutting Capabilities: As a revolutionary dual laser engraver for wood and metal, its 20W diode laser can cut up to 15mm wood and 12mm black acrylic, while the 20W fiber laser can handle thin pieces of stainless steel (0.3mm), brass (0.4mm), and aluminum (0.2mm). xTool F1 Ultra is a Class 4 laser engraver, with both the diode and infrared laser output power being 20,000mW.

Rank No. #9

Longer 20W Laser Engraver Module, Dual Beam Compressed 0.08 * 0.1mm Laser Spot, DIY Laser Head for Laser Engraver RAY5, Eye Protection

More detailed and Multi-Color Engraving: Longer RAY5 20W laser engraver with a newly upgraded 32 bits chipsets motherboard works more smoothly and stable. The advanced built-in 256-bit color scale with 0.08 * 0.1mm ultra-fine laser focus area achieves a finer engraving result and a higher contrast effect. And an air-assisted interface is reserved, which can be easily matched with various air pumps, and more clean surfaces.
Strong Cutting Ability：Ray5 20W has a 20W optical output powerful laser module, which comes with the most advanced laser enhancement technology and enhance the cutting capacity of this machine. It can cut 0.59"/15mm pine wood and 0.31"/8mm acrylic in one pass, 25mm wood and 35mm acrylic multiple passes, and cut 0.002"/0.05mm stainless steel.
Professional Customer Service Team: We provide customers with a 30-day no-questions-asked money-back guarantee, a 1-year warranty for quality-related issues, and permanent professional technical customer service. Just feel free to contact us with any questions. Our customer service team will be online 7x24h for you.

Rank No. #10

Longer RAY5 20W Laser Engraver with Air Assist Kit, 4-in-1 Rotary Roller, and 16 Pcs Raiser, High Precision Laser Cutter and Engraver for Wood, Metal, Acrylic, Cylindrical Objects, Tumblers

Strong Cutting Ability: The Longer Ray5 features a powerful 20W optical output laser module equipped with advanced laser enhancement technology, significantly boosting its cutting capacity. It can cut 0.59" (15mm) pine wood and 0.31" (8mm) acrylic in a single pass, and up to 25mm wood and 35mm acrylic with multiple passes. Additionally, it can precisely cut 0.002" (0.05mm) stainless steel.
More detailed and Multi-Color Engraving: Longer RAY5 20W laser engraver with a newly upgraded 32-bit chipsets motherboard works more smoothly and stable. The advanced built-in 256-bit color scale with 0.08 * 0.1mm ultra-fine laser focus area achieves a finer engraving result and a higher contrast effect. And an air-assisted interface is reserved, which can be easily matched with various air pumps, and more clean surfaces.
Multiple Machines Control: Ideal for commercial use, one computer controls multiple laser engravers. The Ray5 20w can work parallelly with control of only one terminal, you can set a number of units engraving and cut together, superb reliability-7*24H continuous engraving, and improved production efficiency. Suitable for professional offices, workshops, or factories.
The Longer 4-in-1 Laser Rotary Attachment offers versatile and precise engraving for various cylindrical objects, including wine glasses, tumblers, baseball bats, and more. With interchangeable accessories like the Roller Rotary, Chuck Rotary, Sphere-Engraving Module, and Ring-Engraving Stud, this attachment delivers smooth, high-speed engravings at up to 360°/s, thanks to its precision stepper motor with a minimum angle of 0.45°. Made from durable anodized aluminum alloy, it is compatible with various laser engravers and software, including Laserbox Basic, LaserGRBL, and LightBurn, making it the perfect tool for both professional and creative projects
Longer laser engraver Air Pump features adjustable airflow of 10-30L/min to suppress smoke and dust, preventing laser energy attenuation effectively. The powerful airflow cools quickly, preventing excessive burning and ensuring cleaner, smoother cuts. With only 60dB of noise, similar to a household fan, it's ideal for cutting and engraving 3-6mm thick materials. Easy to install with no extra accessories needed, the 2m flexible tube ensures precise cutting and engraving

Last update on 2025-03-18 / Affiliate links / Images from Amazon Product Advertising API

How Do You Buy The Best 20 Watt Laser Diode?

Do you get stressed out thinking about shopping for a great 20 Watt Laser Diode? Do doubts keep creeping into your mind? We understand, because we’ve already gone through the whole process of researching 20 Watt Laser Diode, which is why we have assembled a comprehensive list of the greatest 20 Watt Laser Diode available in the current market. We’ve also come up with a list of questions that you probably have yourself.

We’ve done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for 20 Watt Laser Diode that you consider buying. Your questions might include the following:

Is it worth buying an 20 Watt Laser Diode?
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Why is it crucial to invest in any 20 Watt Laser Diode, much less the best one?
Which 20 Watt Laser Diode are good in the current market?
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We’re convinced that you likely have far more questions than just these regarding 20 Watt Laser Diode, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for 20 Watt Laser Diode, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible 20 Watt Laser Diode. Make sure that you are only using trustworthy and credible websites and sources.

We provide an 20 Watt Laser Diode buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information. How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available 20 Watt Laser Diode currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

Brand Value: Every brand of 20 Watt Laser Diode has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
Features: What bells and whistles matter for an 20 Watt Laser Diode?
Specifications: How powerful they are can be measured.
Product Value: This simply is how much bang for the buck you get from your 20 Watt Laser Diode.
Customer Ratings: Number ratings grade 20 Watt Laser Diode objectively.
Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their 20 Watt Laser Diode.
Product Quality: You don’t always get what you pay for with an 20 Watt Laser Diode, sometimes less, and sometimes more.
Product Reliability: How sturdy and durable an 20 Watt Laser Diode is should be an indication of how long it will work out for you.

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The Best 20 Watt Laser Diode of 2022 – Reviews & Buying Guide

How Do You Buy The Best 20 Watt Laser Diode?

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