1 x PLH3D-XT-50 Specialized Engraving Laser Head
Specs: 6W Optical Power, Ultra HD 550DPI 45um spot, max wood cutting thickness 3 mm (⅛”)
Best For: Very Detailed Engraving, Thin Materials Cutting
Includes: Laser Head
Reduced price!
XT-50 6W Plug&Play Laser Kit for Sienci Labs Longmill CNC
LongMill PLH3D-XT-50 Laser Upgrade Kit
Specs: 6W Optical Power, Ultra HD 550DPI 45um spot, max wood cutting thickness 3 mm (⅛”)
Best For: Very Detailed Engraving, Thin Materials Cutting
Includes: Laser Head, PLH3D-CNC Adapter, Mount and Screws, PSU, Wiring, Air Nozzle, Height Reference Tool
- Read reviews (1)
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Select Accessories
Black November 2025!
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LaserDock PRO - Laser to CNC Magnetic Docking Station $179.10 $143.28 |
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LaserDock PRO - Laser Side Part Only $89.10 $80.19 |
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LaserDock PRO - CNC Side Part Only $89.10 $80.19 |
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OptiShield - PLH3D Laser Engraver Beam Cover $26.10 |
Insurance Options
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2-Year Insurance for Collision or Laser Head Drop $224.10 $201.69 |
CNC Machine Control Software
Additional Safety Accessories
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$168.30 $151.47 |
Spare Accessories
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$63.00 |
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$5.00 |
Items included in the kit:
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1 x PLH3D-CNC Adapter Pro
✔ Provides communication between CNC machines and laser heads.
✔ Ensures an additional layer of safety for users and laser heads.
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1 x High-Pressure Air Assist Nozzle Kit for XT-Series
✔ Performance accessory for XT-Series laser heads.
✔ Increases laser processing speeds up to 6.5 times and decreases heat related damage to the material.
✔ Protects laser optics from smoke and debris.
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1 x Laser Safety Glasses
✔ Laser Safety Glasses rated at OD 7+ over the range of 190 to 540 nm.
✔ Reduce the risk of light entering the user’s eyes from backscattered laser light.
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1 x 19V 2.5A Desktop Power Supply for PLH3D-CNC Adapter with US/UK/EU/AU Wall Plug
✔ For powering PLH3D-6W Series laser heads via PLH3D-CNC Adapter.
✔ Delivers a reliable 19V 2.5A output.
✔ Includes a Wall Plug adapter.
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1 x LongMill CNC Signal Wire for PLH3D-CNC Adapter
✔ Provides connection between PLH3D-CNC Adapter and LongMill Controller.
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1 x PLH3D Height Reference Tool
✔ Compact tool for easy and quick focal distance adjustments for PLH3D-Series laser engravers.
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1 x Set of CNC Laser Stickers
✔ Set of CNC laser stickers.
✔ Included in every laser kit from Opt Lasers.
Downloads
Product description
PLH3D-XT-50 — Complete Plug&Play Laser Kit for LongMill CNC by Sienci Labs
The Ultimate Laser Upgrade for Your LongMill CNC
Great choice! This comprehensive LongMill CNC Laser Add-on kit with the XT-50 laser head, arguably the best single-diode laser cutter and engraver on the market, is a perfect addition for your LongMill CNC machine. It contains everything you need for your LongMill — from plug-and-play electronics for the LongMill controller, through a mechanical mount, to laser safety equipment.
You don’t need higher laser power for laser engraving wood. PLH3D-XT-50 can effortlessly laser engrave wood while being moved at maximum working speeds of popular CNC machines. In addition, XT-50 engraves with Ultra HD resolution — your eye would not see any difference if the focused beam spot was any smaller.
PLH3D-XT-50 laser heads are a great substitute for CO₂ CNC lasers and can work with special engraving laminates, laser foils and many standard materials such as wood, rubber, cardboard, fabrics, leather, painted/anodized metal. The XT-50 lasers are also great for stainless-steel and titanium marking.
Watch the LongMill + XT-50 Demo
See real LongMill workflows powered by the XT-50 — wood, laminates, foils & more.
Benefits Offered by Opt Lasers for the First Time on This Market
5-year Opt Lasers Warranty
30-Day Satisfaction Guarantee for Returns
Lifetime Technical Support
#1 in Customer Support
30-Day Satisfaction Guarantee for Returns
Lifetime Technical Support
#1 in Customer Support
Unmatched Durability and Reliability
Optional Collision or Laser Head Drop Insurance
Product Originating from the Laser Head Concept Creator
Made in Poland, EU
Optional Collision or Laser Head Drop Insurance
Product Originating from the Laser Head Concept Creator
Made in Poland, EU
LightBurn Software — Get 10% Off When You Buy with Opt Lasers Kits
Save 10% when you add LightBurn to your XF+, XT-50, or XT8 Kit.
When purchased together with our Plug&Play Kits, LightBurn comes at an exclusive discounted price — so you start with the best tools and the best value from day one. Widely trusted by laser users around the world, LightBurn is the community’s most popular choice, with thousands of licenses sold.
LightBurn software is available as an optional accessory with our laser kits or heads and is compatible with all Opt Lasers cutting and engraving modules — including XT8, XT-50, and XF+. It streamlines your workflow and provides precise control for optimal cutting and engraving results. You can add it from the Accessories section at the top of the page.
Compatibility tip: LightBurn’s compatibility depends on your machine’s motion controller/firmware (not the laser module itself). It works with most available CNC controllers and includes a Custom G-Code postprocessor. However, please make sure that your controller is supported before purchasing.
Whether you’re working with wood, plastics, leather, or foam, pairing LightBurn with Opt Lasers hardware ensures reliable, efficient, and high-quality results.
Features & Benefits of the PLH3D-XT-50 Cutting and Engraving Laser Head In Details
Adjustable, Microscopic & Square Beam Spot 25–500 DPI – The XT-50 laser heads have adjustable beam spots, below 50 µm at perfect focus. Adjusting the height increases the spot size up to 2 mm, enabling Ultra HD resolution over 500 DPI or large-scale engraving down to 25 DPI.
High Power Density – The XT-50 laser heads achieve a small beam-spot size, increasing power density and enabling faster cutting and engraving. For example, the XT-50 can engrave (not just mark) stainless steel and tool steel.
Cutting and Engraving – PLH3D-XT-50 blue laser allows cutting and engraving of various materials such as wood, cardboard, rubber, paper, textiles, leather, plastic, balsa, plywood, and many others, as well as marking stainless steel, titanium and low heat conductance subtypes of steel.
Improved Safety – The laser head includes an “Armed” LED and overheating/ambient temperature warnings for safe operation.
Factory Set Lens – Each laser head is shipped with a High-Resolution Triplet lens adjusted to focus at 60,0 mm. This distance is the best-optimized focus distance to start with.
Built-in Driver – A short connection between the laser diode and driver ensures better protection, enables high-frequency current modulation, and eliminates inductance effects during switch-on.
No Additional Cooling Required – This lightweight laser requires no additional cooling. The body acts as a heatsink, allowing continuous 24/7 operation.
The Most Precise Laser Head on the Market – Special optical design delivers unparalleled accuracy for detailed work.
Accessories for the PLH3D-XT-50
LaserDock Magnetic Docking Station
(Optional accessory, add at the top of the page)
- Quickly connect and disconnect the laser to and from your CNC machine.
- Protects the laser unit from oils, metal particles, and dust.
- Includes an Aluminium cover that shields the Dock when not in use.
PLH3D-CNC Adapter Pro
(Included in Plug&Play Kits)
- Easy connection to any CNC machine.
- Converts machine signals to the standard compatible with the laser head.
- Ensures an additional layer of safety for users and laser heads.
Laser Safety Glasses
(Included in Plug&Play Kits)
- Provide a significant layer of protection against blue laser exposure.
- Effectively reduce the potential harm from diffusely reflected laser radiation.
- Offer 50% Visible Light Transmission for clear visibility.
CNC Mount, Power Supply, Connection Wires
(Included in Plug&Play Kits)
- Sturdy aluminum mount for secure attachment of the laser head or docking station.
- High-quality and low-noise power supply.
- All necessary wiring for seamless connectivity.
High-Pressure Air Assist Nozzle
(Included in Plug&Play Kits)
- Increases laser processing speeds up to 6.5 times.
- Decreases heat-related damage to the material.
- Protects laser optics from smoke and debris.
Laser Safety Window
(Optional accessory, add at the top of the page)
- Ideal for CNC machine enclosures.
- Blocks deep ultraviolet, blue, and green light.
- Enhances the safety of the surroundings.
Example Applications
Exceptionally Accurate Metal Engraving
PLH3D-XT-Series engraving laser heads were devised as a series of specialized laser heads for engraving with extremely high resolution and cutting thin materials with ultra-thin lines. Based on our 6W-Series laser heads, XT-Series laser heads inherited all their advantages: versatility, compact dimensions and high-speed driver. The microscopic beam spot allows precise and very small engravings in a wide variety of materials including stainless steel.
| Material | Operation | Feed Rate | Air Flow |
|---|---|---|---|
| Stainless Steel | Engraving | 5 mm/s (11.8 IPM) | 5 L/min |
Ultra-HD Ceramic Tile Engraving
The 500 DPI capability allows for amazing quality engravings on materials like ceramic tiles. Higher power density reveals new cutting and engraving possibilities. Additionally, cutting and engraving processes are significantly faster compared to laser heads without anamorphic optics.
| Material | Operation | Feed Rate | DPI |
|---|---|---|---|
| Ceramic Tile | Engraving | 2500/min | 423 |
High-End Detailed Engraving & Cutting on Soft Materials
Thanks to their spot width of less than 50 µm, PLH3D-XT-50 laser heads allow cutting with a thin, even cut line. For comparison, a typical human red blood cell is 5–10 µm in size, and the diameter of a single human hair is 50–200 µm.
| Material | Operation | Thickness | Feed Rate | Air Flow |
|---|---|---|---|---|
| Coal Duplex | Cutting | 1 mm (0.0393") | 500 mm/min | 10–20 L/min |
Other PLH3D-XT-50 Applications Gallery
Product Technical Specifications
| PLH3D-XT-10 | PLH3D-XT-50 | |
|---|---|---|
| Optical Output Power | 0.5 W | 6.0 W |
| Wavelength | 405 | 450 |
| Beam Spot Size | 10 µm by 4 µm | 50 µm by 4 µm |
| Resolution for Laser Engraving Applications | 3100 DPI | 500 DPI |
| Dimensions of Laser Head (L × W × H) | 40 × 55 × 140 mm (1.6 × 1.7 × 5.51 in.) |
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| Weight of Laser Head, Typ. | 300 g | |
| Flow Rate of Fan | 43 m³/h (25 CFM) | |
| Fan Noise | 58 dBA | |
| Mounting Hole Pattern | 4 holes, 24 × 15 mm (0.94 × 0.59 in.) |
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| Mounting Hole Type | M3 × 0.5 × 4.5 mm | |
| Max. Ambient Temperature | 40 °C (113 °F) | |
| Modulations Inputs | 2 | |
| Modulation Input 1 | Analog/TTL/PWM, 0–5 V | |
| Modulation Input 21 | TTL/PWM 0–24 V | |
| Recommended PWM Base Frequency | 5–10 kHz | |
| Max. Modulation Bandwidth | 30 kHz | |
| Input Impedance of 1 and 2 | >1 kΩ | |
| Power Supply Unit Voltage | 12–24 V | |
| 12 V PSU Min. Current | 2.5 A | |
| 24 V PSU Min. Current | 1.25 A | |
| Max. Power Consumption | 20 W | 30 W |
Reviews
Cool for all task even with high dpi
Every project now feels like a new adventure