LONGER Ray5 20000mW Laser Engraver with 4-in-1 Rotary Kit - Powerful

In this review of the LONGER Ray5 20000mW laser engraver, the bottom line is simple: this machine is aimed at makers and small shops that need strong cutting power and precise engraving across many materials. The standout reason to buy is the combination of a 20W laser module and a 400 x 400 mm work area, which together allow users to tackle larger projects and thicker materials than typical hobby engravers while keeping fine detail intact.

Key Features

• 20000mW Laser Power: Provides sufficient power to cut 0.59 in pine wood, 0.31 in acrylic in a single pass and enables deeper cuts with multiple passes for thicker materials.
• Wide Material Compatibility: Works with stainless steel, leather, cotton fabric, wood, glass and acrylic so users can switch between craft and light industrial projects.
• Precision Optics and Control: With a 0.08 x 0.1 mm spot size and engraving accuracy to 0.01 mm, fine text and detailed artwork reproduce cleanly.
• Built-in Controls and Connectivity: The 3.5 in touchscreen plus USB, Wi-Fi, app and TF card options make setup and offline operation flexible for different workflows.
• Rotary and Air Assist Accessories: The included 4-in-1 rotary roller kit and adjustable air pump reduce smoke and allow cylindrical engraving on tumblers and glasses.
• Safety and Reliability: Protective cover, goggles, emergency stop, motion detection and active cooling help keep operation safer and extend machine life.

Who It's For

The Ray5 is best for hobbyists, makers and small business owners who need a step up from desktop hobby lasers and want to cut or engrave thicker materials while retaining fine detail. Its large 400 x 400 mm bed and rotary kit suit projects such as signage, phone case decoration, tumblers and small wooden parts.

It is less appropriate for heavy industrial production where a higher duty cycle or larger bed is required, or for users who need absolute plug-and-play simplicity without any setup; some familiarity with LaserGRBL or LightBurn and basic material testing will yield the best results.

Pros & Cons

Pros

• High cutting power that can handle 15 mm wood and 8 mm acrylic in a single pass for quick results.
• Precision engraving thanks to a fine 0.08 x 0.1 mm spot and 0.01 mm accuracy for detailed work.
• Useful accessories including a 4-in-1 rotary roller and adjustable air pump for cleaner cuts and cylindrical items.
• Multiple connection methods and a built-in touchscreen make it flexible for different workflows.

Cons

• Powerful lasers require careful safety practices despite the provided cover and goggles, so novices must learn proper procedure.
• Not intended for heavy continuous industrial production without additional workflow planning.

Specifications

Laser Power	20000mW
Working Area	400 x 400 mm (15.7 in x 15.7 in)
Max Single-Pass Cuts	15 mm pine, 8 mm acrylic, 0.05 mm stainless steel
Spot Size / Accuracy	0.08 x 0.1 mm spot, 0.01 mm engraving accuracy
Control Hardware	32-bit motherboard, 240MHz ESP32 chipset
Connections	USB, Wi-Fi, app, TF card; supports LaserGRBL and LightBurn
Included Accessories	4-in-1 rotary roller kit, air pump, 12 risers, protective cover and goggles

Our Verdict

The LONGER Ray5 20000mW is a compelling choice for serious hobbyists and small shops because it balances raw cutting power, fine engraving precision and useful accessories like the rotary kit. For anyone who plans to work across wood, acrylic, leather and glass and wants a larger bed with flexible connectivity, it offers strong value, provided the user follows recommended safety steps and accepts that it is not a high-volume industrial cutter.

Frequently Asked Questions

Can the Ray5 engrave cylindrical items?
Yes, the included 4-in-1 rotary roller kit enables precise engraving on glasses, tumblers and similar cylindrical objects.

What software does it support?
The machine supports LaserGRBL and LightBurn and can connect via USB, Wi-Fi, app or TF card for offline operation.

How does air assist help?
The adjustable air pump (10-30 L/min) reduces smoke and dust and cools the work area to prevent over-burning for cleaner cuts and engravings.