We guide the laser beam by hand


Hand Laser System Technology

The team at Blue Lasertools GmbH has been developing and manufacturing hand-held laser welding devices for more than 10 years. Mobile hand-held laser welding devices expand the possibilities of laser application welding in tool and mould manufacturing and laser fine welding in sheet metal processing. Laser hand welding involves moving a laser processing optic by hand along the workpiece. Very large and heavy tools and shapes can be welded regardless of location, even in a tense state if necessary. The machining head is small and with its low weight is also suitable for longer-lasting welding tasks. The laser beam is guided to the workpiece via a flexible laser light cable that is variable in length. The laser device can therefore be set up independently of the place of use.



  • Contact tip for reproducible welding results with protective gas supply
  • Hand switch that triggers the laser source in conjunction with the foot switch
  • Protective glass for optics, can be swapped by loosening the contact tip

Control Box

  • Optional with a program choice panel with 4 welding programs
  • Error-proof Siemens control S7 1200


  • Integration via control
  • Essential part of the 3-point security concept (contact press kick)


  • Represents the optical connection between laser source and penwelder
  • Depending on the manufacturer, plug type A (trump) or plug type QBH (SPI, IPG or Coherent) can be used, further plug types on request

Compatible Laser Sources

Only solid state laser, see vendor logos below.

The Penwelder is the only system for hand-held laser welding that can be easily and securely connected to any common solid-state laser source. The connection is made via a second output at the laser source. When welding with the penwelder, the welding robot cannot be operated and vice versa.

How we make the Penwelder safe


When developing the Penwelder system, particular attention was paid to laser safety. The Penwelder system integrates all safety-relevant components of the laser source and uses them in during operation.
In principle, 3 prerequisites must be met in order for the laser beam to be triggered. First, the welding pen must be mounted on the component so that a test current can flow between the welding pin and the control box. Secondly, the handle shells must be pressed and thirdly, the footswitch must be actuated. If one of the 3 conditions is not met, the laser does not start and no laser beam comes out of the welding pen. All control elements are designed to be fail-safe and consist of modules from well-known manufacturers such as Siemens and Beckhoff.

Laser safety during operation

A laser handwelding device is subject to laser protection class 4 in operation. As a result, different measures are required on the customer side to ensure laser safety, such as the appropriate briefing of the employees, the wearing of special protective equipment and the establishment of a dedicated laser safety area.