Search  for anything...

LASER TREE 40W Diode Laser Module, Air Assist & High Accuracy for Cutter | High Accuracy, Air Assist Nozzle, For Wood, Metal, Acrylic, Leather, Ideal for Laser Engraver & Cutter Machines, 40W, Class 4

  • Based on 14 reviews
Condition: New
Checking for the best price...
$629.99 Why this price?
Labor Day Deal · 10% off was $699.99

Buy Now, Pay Later


As low as / mo
  • – Up to 36-month term if approved
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Sunday, Sep 6
Order within 11 hours and 25 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Size: 40W+ Laser Output


Features

  • 40W Diode Laser Module - K40 is a true 40W+(40000mW ) output laser engraving and cutting module designed for powerful cutting. Built-in eight high-performance fast-axis compression diodes, which can provide up to 44000mW optical power to achieve fast and efficient cutting. LASER TREE laser cutter module can cut 30mm pinewood, 15mm acrylic, and 30mm plywood in one pass. A One-Stop Solution For All Your Machine Upgrades
  • Built-in Air Assist & Dual Fan Cooling Design - Built-in air assist improves cutting performance, and reduces air resistance, resulting in faster, deeper, and smoother cutting with fewer burn marks, cutting accuracy and cutting quality can also be optimized to a great extent. Dual fan cooling design, excellent heat dissipation improves laser head stability and service life.
  • Wide Compatibility - In order to improve the compatibility with different laser engraver machines, K40 provides a solution by an adapter board for electric compatibility and a sliding bracket with multi holes for installation compatibility. Electric compatibility can be checked easily by 'power' and 'signal' LED indicators. This laser module is compatible with TTL/PWM-controlled DIY machine, laser engraver cutter machine, CNC laser machine, and 3D printer machines
  • Detailed design - The bottom is equipped with a red cross positioning cursor (offset X: 0mm, Y: -21mm), which can quickly locate the starting point and ensure the accuracy of the secondary cutting operation. Integrated dovetail guide design ensures smooth movement and stability of the equipment. The focus slider structure has been upgraded to slide more smoothly, allowing users to achieve precise cutting quickly and easily

Description

View Window LASER TREE comes from a professional laser engraver and laser module manufacturer with an experienced R&D and support team. We are committed to providing you with high-quality products. We always put user requirements first and constantly pursue user satisfaction. Whether you’re looking for various power engraver modules or cutting modules, LASER TREE has you covered.

Brand: LASER TREE


Material: Acrylic


Color: 40w+ Laser Output


Product Dimensions: 5.28"L x 2.6"W


Style: Laser


Brand Name: LASER TREE


Number of Packs: 1


Unit Count: 1 Count


Manufacturer: LASER TREE


Manufacturer Warranty Description: 1 year


Number of Items: 1


Item Type Name: Laser module


Model Number: LT-K40 1


Manufacturer Part Number: LT-K40


Color: 40w+ Laser Output


Style Name: Laser


Item Dimensions L x W: 5.28"L x 2.6"W


Level Measurement Units: millimeter


Material Type: Acrylic


Operation Mode: Automatic


Level Measurement Type: laser


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Sep 6

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Excellent buy for the money
Size: 40W+ Laser Output
Have a K40 mounted on my Openbuilds LEAD 1515 CNC which makes this a 4 foot laser cutter. Cutting through 1/4 inch, 6mm MDF in one pass at 450mm/m and 80% power. I did wire the laser, exhaust and air assist to their own surge protector to keep everything safe.
Reviewed in the United States on February 20, 2026 by Mark

  • Documentation poor defective pcb. Poor customer support.
Size: 40W+ Laser Output
Documentation is simple but very incomplete. Cannot find any information regarding changing output terminals. Turned out that each large output terminal is supposed to be common with its smaller corresponding terminal according to support. Mine are not connected Correctly. Also the laser aiming target flickers on and off if the unit is tapped with a finger. Loose connnection were ruled out, it is a defective printed circuit board. Poor customer support. ... show more
Reviewed in the United States on June 19, 2026 by Graeme Oldham

  • Works for CR Falcon
Size: 40W+ Laser Output
Works like a champ on a CR falcon with some minor modifications to the machine. I had to drill some holes in the machine bracket to accommodate for the new mounting bracket, 3d print a spacer to account for the larger module, and add a switch to turn off the PWM signal entirely when framing a burn job - the framing cross hairs only show when the power is set to 0, but Creality's stock firmware is set to 5, enough to lightly engrave the perimeter on leather or wood with the more powerful module. Make sure to account for the 21mm offset in lightburn if you're sending via Gcode on a sd card, else it'll try going past zero. ... show more
Reviewed in the United States on April 14, 2025 by Kveldulf

  • Still working good.
Size: 40W+ Laser Output
So for I have cut about 500 feet of 1/4" plywood. 20,000 parts 2"x2". I have to go slower than I was hoping but it works. 24 inch per min two passes.
Reviewed in the United States on March 7, 2026 by Thomas Krapp

  • Incorrectly labeled product.
Size: 40W+ Laser Output
Reviewed in the United States on June 24, 2025 by George Bacha

  • Works Great.
Size: 40W+ Laser Output
Delivered on time, came very welled packaged, just as seller described. Unit was easy installed on my Longmill cnc. This unit is way more powerful than my 7 watt. Cuts through ply, MDF, Acrylic, and pine as advertised on web site. I may buy their smaller laser just for engraving tile because this one is a little big. I have cut acrylic key chains, words for crafting, engraved plywood,cut 1/4 ply for a prayer cross. I bought the comgrow Air Assist kit to provide air assist. ... show more
Reviewed in the United States on March 21, 2025 by John G.

  • Great laser replacement
Size: 40W+ Laser Output
Absolutely great laser. Perfect replacement for my Naje 20w
Reviewed in the United States on October 31, 2025 by Ron Keeler

  • Great laser. NEED air assist
Size: 40W+ Laser Output
Bought this to upgrade my 5.5w sculpfun s9 after being frustrated with it. No special modification needed, it bolted right on. It did need two longer m6 to bolt the adapter plate to that carriage, i had two laying around. This laser cuts very well and deep. I use shop air between 20-40 psi for my air assist and it cleans the cut awesome. Plywood doesn’t cut well due to glue and different woods types. Etched steel. Doesn’t etch aluminum. Good manual in box. ... show more
Reviewed in the United States on January 9, 2024 by 1ockdown

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...