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Openbuilds Acro-System Laser Upgrade with PLH3D-2W Laser Head

OpenBuilds Acro-System Laser Upgrade with PLH3D-2W Laser Head

This kit includes all of the necessary attachments to laser engrave with OpenBuilds Acro-System CNC machine. It does not include the CNC machine.

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Laser Safety

$153.30 tax excl.




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Availability: In stock


SKU: 002225

GTIN: 5902693111894

Individual Kit Parts


  • $70.00 In stock
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    These laser glasses can help reduce the probability of light entering the user’s eye from a diffusely backscattered laser light. This product is OD 7+ over the range of 190 to 540 nm, blocking deep ultraviolet to green including violet and blue light.

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  • $29.00 In stock

    This Mounted Triplet lens can be used to variably focus or collimate the laser light with reduced aberration due to its triplet (three element) design. Its relatively long effective focal length (EFL) of 8 mm allows it to focus laser light to a small spot.

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  • $15.00 In stock

    This Mounted Aspheric lens is useful to collimate or focus laser light in the visible wavelength regime. The aspheric design nearly eliminates spherical aberration without needing multiple optical elements. It has a broadband AR coating of 400-700 nm, allowing it to be used ...

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    In stock

Technical Data

Focus Distance
20 - 120 mm
Focused Beam Spot Size @ 50 mm
0,1 x 0,1 mm
Focused Beam Spot Size @ 80 mm
0,1 x 0,18 mm
Modulation Input Voltage Range
0 - 5 V
Modulation Type
Analog / TTL
23 dBA
Laser Diode Wavelength
450 nm
Max. Laser Diode Optical Power
2 W

Product Description

The parts included in the OpenBuilds Acro-System Laser Upgrade with PLH3D-2W Laser Head are listed above, in the section “Individual Kit Parts”. The kit DOES NOT include the CNC Machine.

OpenBuilds Acro-System

Find more about OpenBuilds Acro-System

PLH3D-2W Engraving Laser Head

PLH3D-2W is a medium power 2W professional engraving laser head. This lightweight 70-gram laser does not require any external cooling. The heat sinking design not only cools the laser head, but also protects the lens from dirt by creating an air nozzle. The PLH3D-2W is designed to work with common 12V power supplies with a minimum of 1.5A current.

The laser driver is equipped with an LED indicator that displays all the information essential for operating the laser. An integrated temperature control system is designed to turn off the laser head when the maximum operating temperature is exceeded. By attaching the miniature driver directly on the laser head, the speed of diode modulation is improved in comparison to systems with a separate driver. This design allows connecting longer cables to the head, if needed.

Analog modulation enables users to control the laser power. 0V is equal to laser output power 0W (but still armed), 5V equals to the maximum output power of the laser, 2V corresponds to around 40% of the maximum power. This can also work as a TTL input if a voltage of 0 to 5V is used.

In case users wish to modulate power through PWM, the acceptable base frequencies are in the range between 5 and 10 kHz. Thermal tests we conducted on several prototypes allowed us to optimize the radiator’s shape and enable efficient cooling, maintaining a compact size of the device. Overall the laser’s functionalities are standard for PLH3D Series, but the smaller spot size opens a possibility to illuminate surfaces covered with a photosensitive material. This gives a chance, for example, for a very quick PCB prototyping.

You can also discover further information about our 2W engraving laser.


Printable Height Reference Tool

Moreover, the kit includes an STL file of a height reference tool that can be used for calibration of working distance and the focus on the Z-axis

How to use the Height Reference Tool:

  • Mount the laser head on your printer.
  • Place the adjusting tool on the working plane of the printer, under the laser head.
  • Using your controller/software move the laser head in Z-Axis, try to gently touch the reference tool. At this point you can calibrate Z-Axis.



The included file for a 3D-printed mechanical mount is included for your convenience. It is intended to be printed on by the customer. The design can also be modified by the customer to suit their specific needs. Note, it is the responsibility of the customer to ensure that the mounting adapter is well-suited to allow the laser to be mounted and operated safely. Tomorrow’s System and its affiliates take no responsibility for the reliability or performance of the laser mounting adapter printed by the customer.


  • Remember that it is not a toy.
  • Laser radiation is dangerous even when scattered or reflected from any surface.
  • Always use proper protection laser filter on your CNC machine dedicated to 430 - 480 nm in order to avoid reflected radiation.
  • Never point laser head at people or animals.
  • Do not touch the beam, it may cause burns or another injury.
  • Do not stare at the beam or the beam spot while the material is being cut.
  • Laser radiation - Avoid eye or skin exposure to direct or scattered radiation. 
  • Class 4 laser product.


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