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The PUK D6 -
the dental welder

The PUK D6, the dental welder, is compact and versatile, designed specifically for dental applications and alloys. All welding tasks in the daily routine of a dental laboratory, which could otherwise only be performed with a laser can be performed with this dental welding unit. See for yourself the various possible applications in our application videos!

Dental Welder PUK D6

The dental welder at a glance

Dental-Schweißgerät PUK D6 Frontalansicht
Dental welder PUK D6 front view
Lampert design
  • The display of the PUK D6 with high color brilliance and transparent display of the performance parameters
  • Clear design language with timeless aesthetics as a visual highlight at every workstation in the dental laboratory
  • Noble, selected materials for highest demands on value and appearance
Functionality of the fine welding device
  • 70 % higher display resolution with increased viewing angle under all ambient conditions on the new Lampert PUK D6 dental welding unit
  • Optimum welding curves for all common available dental alloys
  • Higher maximum power and improved welding performance – especially with highly conductive alloys – thanks to the new speed function
  • New standby function – fast restart, minimal energy consumption
Operating the dental welder
  • Single-screen menu for intuitive and fast selection of the right performance parameters through direct control with one-hand joystick with turn-push-tilt function
  • Faster maximum spot weld sequence due to extended speed function – selectable in 3 levels
  • Refined micro mode with narrower gradation enables extended spectrum when welding at the lower power limit, e.g. in orthodontics
  • Newly designed, patented welding process control for avoiding faulty welds and learning PUK welding even faster
Technical data PUK D6
Current (TIG) min./max. 9 – 440 A
Pulse duration (TIG) min./max. 0.1 – 34 ms
Current (fixation welding) min./max. 80 – 700 A
Pulse duration (fixation welding) 1.5 ms
Welding speed up to 3 Hz
max. Loading time 0,8 s
Number of metal programs 10
Range display with recommended settings +
High frequency welding +
Automatic gas pre-flow time +
Gas consumption approx. 2 l/min
Inert gas Argon > 99.9 % e.g. Argon 4.6
Power consumption during welding 400 VA
Power consumption during idle operation 7 W
Weight 10,4 kg

Fields of application for dental welding

Dental laboratory
Dental technician

Welding, repairing  and delating removable cast partials
Welding dentures
Fabricating telescopic prostheses (German crowns)
Hybrid welds
Welding orthodontic appliances
 Welding orthodontic wires
 Welding orthodontic bands
 Welding bridges
 Welding implant bars
 Welding clasps of cast partials
 Welding crowns
 Welding brackets
 Welding retentions
and much more

Welding high gold alloys
Welding gold-reduced alloys
Welding silver-palladium alloys
Welding palladium-based alloys
Welding nickel-chromium alloys
Welding cobalt-chromium alloys
Welding stainless steel
Titanium welding

Play Video

The PUK D6 dental welder in practice

See here our product video with a short presentation of the new PUK D6 fine welding unit for dental technicians. This will show you the advantages and innovations of the new generation of devices from Lampert – let us surprise you!

PUK welding in the dental laboratory

Detailaufnahme des Schweißmikroskops SM 6 von Lampert mit eingespannten Schweißhanstück - detail view of the welding microscope SM 6 from Lampert with a mounted welding handpiece
For daily use
Get results faster
  • “Blind operation” through one-hand operation: Concentration remains on the workpiece!
  • Even more powerful LED illumination in our new premium welding microscopes. More uniform illumination of the working area – more flexible use of the microscope: These microscopes can also be used as full-fledged working microscopes – not only for welding!
  • New: Setting of all functions, the parameters power, pulse duration and menu navigation with only one joystick rotary control
  • Individual welding device setup via the settings menu
  • Very low, controllable heat generation

Fast amortization for dental laboratories
  • Low acquisition costs for the PUK D6 dental welder
  • Very good price-performance ratio
  • Facilitation and time savings during repairs and soldering
  • Low costs for consumables
  • Low argon consumption
  • Maintenance free technology

The advantages of the PUK D6 dental welder speak for themselves

Welding instead of soldering

Strong and long-lasting heat exposure during conventional TIG welding or brazing with the flame is often undesirable or intolerable in dental technology. The new Lampert PUK D6 dental welder not only saves time, but also avoids unnecessary material consumption.

Biocompatibility for any dental prosthesis

Fine welding with the PUK D6, unlike brazing, uses alloys of the same type and thus avoids any unnecessary mix of materials.
This ensures biocompatibility in both the fabrication and repair of dental restorations.

Compact and versatile

When precision, reliability and controllability are required, the PUK D6 is the first choice, making it the ideal complement to CAD/CAM design and additive processes as well as classic casting techniques.

Unique functionality

In addition to the classic TIG micro-pulse welding technique, the PUK D6 also offers the practical and proven retention welding function for fast and stable denture repairs or extensions.

Other features in the overview
The retention welding mode of the PUK D6 dental welder
  • Simple, time-saving and inexpensive procedure to produce stable retention pins in just a few seconds.
    (Ø 1.2 – 2 mm) to be welded onto existing dentures – for repairs, extensions or new fabrications.
  • In a fraction of a second, a special adapter is used to create an extremely stable connection – without any significant heat development on the denture.
  • No re-welding and no post-processing of the weld or its surroundings necessary. As a result, cast partial repairs or extensions can be completed much faster for the dental technician than with conventional techniques.

Automatic mode or foot switch
  • Help for safe work with difficult workpiece constructions
  • Simple activation: Press the foot switch for 3 seconds – blue symbol appears in the display – welding is now triggered by pressing the foot switch, similar to laser welding.
Fixing welding function
  • Very simple and efficient method for fixing dental workpieces for final welding or soldering. E.g. for a fixation weld of a separated bridge or other dental prosthesis on the working model or to fix wire and construction elements for orthodontic appliances.
  • Joining of two metal parts at their point of contact by means of resistance welding – the parts can thus be tacked together for final joining by means of PUK fine welding, or to fix them for a soldering process.
  • Especially suitable for machining metals with low electrical conductivity, e.g. stainless steel or titanium.
  • Possibility of welding material thicknesses of even less than 0.2 mm, e.g. wires or orthodontic bands, in an even more controlled manner for very delicate dental restorations.
New speed function
  • A significantly faster welding cycle enables the dental technician to work even more continuously.
  • Possibility to shape applied material as desired or also to greatly improve the fine welding properties of particularly thermally conductive dental alloys.

The operating concept of the new PUK D6 that inspires dental technicians

Optimized settings menu of the PUK D6 micro pulse welder with the possibility of quickly calling up practical additional functions such as the refined micro mode, the retention welding mode or the fixation welding function.
Basic functions are selected in just a few steps in the device settings.

  • Intuitive, simple, ergonomic operation: select metal – select welding situation -…
  • Visualization of the optimum setting ranges for the selected welding task
  • Presets for all common dental alloys
    such as for cobalt-chromium and high gold alloys,
    stainless steel, titanium, and many more, as well as for typical welding situations in dental technology.
  • Setting of the parameters power, pulse duration and menu navigation directly via the one-hand joystick of the PUK D6
  • Easy to understand symbols with self-explanatory user interface

PUK D6 - Use in modern orthodontics

The specialist journal KIEFERORTHOPÄDIE NACHRICHTEN (issue 9/2023) from the publishing house OEMUS MEDIA AG has published an interesting specialist article which, among other things, also addresses the topic of micropulse welding.

Dr. Seung-Woo Yoo (Neu-Isenburg) and Dr. Matthias Himmelreich (Langen) will shed light on the topic of “Virtual design and fabrication of fixed orthodontic appliances”.

CAD/CAM techniques are now also revolutionizing the design options in orthodontics.
In many cases, the use of a PUK D6 represents the ideal link between design on the screen and SLM (3D printing), casting or milling techniques for the welding and joining of the final apparatus.

Read the full article here (German language only) and see for yourself the possibilities of modern precision welding technology in orthodontics.

Accessories and optional equipment for dental welding

Practical further system components and accessories, such as electrode grinding motor, flow controller and many more are available according to your individual needs. Please also visit our accessories page.

Scope of delivery of the PUK D6 dental welding system from Lampert

The PUK D6 dental welder is supplied with the following accessories and contains all the necessary documentation
and manuals for the dental technician:

The D6 PUK welding system with the selected welding microscope
1 set of special electrodes
Starter accessory set
Small welding course with short instructions, several steel plates and some welding wire for an easier introduction to the Lampert fine welding technique.

Instruction manual

for the PUK D6 dental welder

Here you can download additional information about our welding equipment

Quality and safety first

Quality for your demand: We place importance on the highest production and safety standards and guarantee the reliability of our products.

High-quality workmanship in every detail: noble, selected materials for the highest demands on value and appearance.

Special electrodes without toxic components, with optimized ignition and welding properties.

Ergonomic working: Individual adjustment of the working position and comfortable hand rests for low-fatigue work.

Single-screen display with high color brilliance and
transparent presentation of the performance parameters.

High quality connectors and professional screw and plug-in connections ensure durability and lasting safety in daily use.

One-hand joystick with turn-push-tilt function and simplified, intuitive menu navigation


Quality “Made in Germany”
The PUK welding equipment is developed and produced in Germany.


Quality from conviction
For the PUK welding equipment we provide 3 years warranty!


Each PUK welding system is manufactured according to the valid EN standards and is CE compliant.


In addition to CE compliance, our welding equipment also meets UKCA requirements for the UK.


Latest technology
Our long-standing cooperation with the University of Applied Sciences WÜ-SW vouches for innovation.


The official German ceritification authority for research and developent “Bescheinigungsstelle Forschungszulage” (BSFZ) awards its seal exclusively to companies that are eligible to claim funding through the research allowance.

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