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The PUK D5 – developed for daily use
in dental laboratories.

The micro pulse welding machine is compact and versatile in use, and is designed specially for applications and materials which are used in the dental field. Using this TIG welding device it is possible to apply welding in all everyday tasks that arise in a dental lab, which could otherwise only
be performed with a laser.


You can get a picture of the various application possibilities in our video library!



Facts that speak for themselves:

  • Superior welding characters
  • Consistently reproducible high-quality welding results with all materials suitable for welding
  • Simple and intuitive to operate
  • Precise positioning of the spot welds






  • Maintenance-free technology
  • Very low initial costs – excellent price/performance ratio
  • Mobile due to its compact size
  • Very low costs of consumer materials
  • Very low argan gas consumption



Compact size - can find a place in any dental laboratory

  • Spot welds with a diameter of approx. 0.2 up to 3 mm can be made (depending on the material and setting). 
  • The right parameters are available for every dental application! 




Conceived for daily use

  • Extremely short welding impulse times enable high-quality welded joints on workpieces down to a material  thickness well below 0.2 mm (e.g. for orthodontic constructions) as well as in heat-sensitive areas (e.g. near acrylic and ceramic parts).


  • Due to the broad performance range of the PUK D5, it is also possible to produce stable welding connections on very solid parts such as bridges, bars or cast partial dentures.


  • The use of corresponding welding wires is recommended here.  

PUK’s operating principle is as simple as it is ingenious

  • As soon as the tip of the electrode on the welding handpiece touches the workpiece, the welding process starts automatically. An arc is lit precisely at this contact point under a protective atmosphere (argon), whereby the electrode is automatically drawn back into the handpiece approx. 1 mm and lifted from the workpiece surface in this way.  This enables welding points to be set with the desired intensity – consistently and with continuous repeatability.


  • It is possible to weld all metals and alloys that are generally suitable for TIG welding or lasering. These include e.g. cobalt chromium alloys, high-gold, palladium-based and other alloy groups, as well as titanium and stainless steel.



You will love the PUK!

  • Intuitive to operate
  • Thanks to intelligent pre-settings, only 2 operating steps are necessary. Select metal group and work situation > weld!



  • Precision handpiece for precision welds
  • Solid quality and the best materials such as stainless steel and teflon are prerequisites for precision in manufacturing and reliability in application


  • Handling the components: Sophisticated details simplify handling.


  • Premium plug connections
  • Professional screw and plug connections provide long service life and permanent safety in daily use.
  • Practical and fast: Plug-in nozzles and nuts allow you to quickly change electrodes without tools.
  •  Ergonomic work: Individually set work position and comfortable hand rests for fatigue-free work.
  • Special electrodes without poisonous components. With optimal ignition and welding properties
  • Premium craftsmanship in every detail
  • Dust-proof housing

PUK makes welding simple


The operating concept of the PUK D5 combines the advantages of a modern touchscreen with the tried-and-true operation via a single rotary controller. Thus the intuitive and safe setting of the device is guaranteed at all times.

Correctly set the device in just two steps:


  • 1. Select metal group







  • 2. Select welding situation
    > weld!



  • Setting of welding parameters with a single rotary controller
  • Power and welding time can be adjusted "blindly" according to individual need.
  • You can continue to concentrate on the workpiece.




Recommended setting range:


  • A blue bar indicates the setting range recommended by our technicians.




The "red" range:


  • The red lines on the display indicate that you are outside of the sensible time or power range for the metal and welding situation selected.


Helpful information by touch


Informative help windows support the intuitive operation



  • If you touch a button on the display for a longer period of time (approximately 2 seconds), a help window pops up in which the basic functions of the button are explained.
  • Then touch the help window briefly to switch back to the operating menu.


Quality and safety come first


Quality for your requirement: We place great value on the highest production and safety standards and guarantee the reliability of our products.

  • Quality "made in Germany": The PUK welding devices are developed and produced in Germany.
  • Standard-oriented: Every PUK welding system is manufactured in accordance with existing EN standards and carries a "CE" certificate of conformity.

Ease-of-use features for individual demands

  • Optimised "settings" menu
  • Simplified menu navigation with one single rotary controller
  • (De-)activation of the expert menu with 16 different welding curves
  • (De-)activation of the program memory with 20 custom programs
  • (De-)activation of the retention welding mode
  • (De-)activation of the tack welding function
  • (De-)activation of the micro menu
  • The selection of basic functions such as lighting, welding sequence, choice of language or acoustic welding signal.
  • Opening the gas valve for adjustiing the gas flow to the correct amount required

The News of the PUK D5


– the further development of a proven technology...


The patent-pending system for welding process monitoring
   · New software for contact monitoring of the hand piece
   · Prevention of welding errors through interruption of weld if excessive pressure is applied to the electrode
   · Increase in service life of electrode tip
   · Prevention of tungsten inclusions on sensitive surfaces or on workpieces and materials that still require further processing
   · Improvement in the overall weld quality through more uniform processing
   · Error prevention in the handling: Increase in process reliability and more consistent quality for larger quantities
   · Learning function: More rapid and simpler learning of correct welding procedure, especially for beginners

Faster progress to better results – "blind operation" with single-handed operation. Concentration remains focused on the workpiece.


Even higher-performance LED lighting 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 fully equipped workplace microscopes - not just for welding.


Setting of parameters for "Power", "Time" and menu navigation with just one single rotary controller.  


Individual device set-up using the settings menu, e.g. preselection of welding cycle, calling operating levels up on screen and hiding them again, e.g. program memory, expert level, retention welding and tack welding


Extremely simple touchscreen operation. Now with slide function!


Preselection of two different welding cycles





The application range of the PUK D5 is further expanded with material thickness down to less than 0.2 mm allowing the welding of wires and thin structures like orthodontic bands, for example, with even greater control.



A significantly faster welding cycle enables an even more continuous work flow. With this setting, there is an opportunity to shape the material added as desired and to significantly improve the welding characteristics for highly thermally conductive dental alloys.


The result of the development work enabled an improvement in the welding parameters with newly defined recommended adjustment ranges for all common dental alloys.

The retention mode


  • Simple time-saving and material-saving welding of retention tacks (Ø 1.2, 1.3, 1,5 and 2 mm), for repairs, enhancements or new items.


  • In a fraction of a second an extremely string connection is formed by means of a special adapter, without any heat development of any consequence in the workpiece.


  • No re-welding and no re-working of the weld points or their surroundings are necessary. This enables model cast repairs or enhancements to be carried out significantly faster than with conventional techniques.




Automatic operation or foot switch


Using the foot switch can make work safer and easier when working on difficult workpiece geometries.



  • Activate the foot switch by pressing it down for 3 seconds. The auomatic function of the PUK is then deactivated.
  • The blue symbol top right on the display signals that foot switch operation is activated.


  • Welding is then only triggered when you press the foot switch.

Tack welding function


The tack welding mode – very simple and efficient method for fixing workpieces in order to subsequently weld or solder them. E.g. for a fixation weld of a cut bridge on the work model or in order to fasten wire and construction elements in place.

  • Using this process, two metal parts are bonded together at their contact point using resistance welding.


  • The parts can be "stuck" together so that they can then be finally attached using PUK welding or so that they can then be soldered.


  • The tack welding function is particularly well suited to processing metals with low electrical conductivity, e.g. stainless steel or titanium.

At home in dental laboratories


Developped for for a long service life and continuous operation:

  • Passively cooled
    The PUK does not need a ventilator or ventilation slots.


  • Dust-tight housing
    The PUK features a closed, tight housing. Thus none of the metal, polishing or abrasive dusts generated in the dental lab can enter the device. Damage or device errors caused by unavoidable deposits are avoided.

Additional available accessories


Additional practical accessories such as the electrode grinding motor, different contacting tools and others are available to meet your individual needs.
Feel free to visit our accessories page.



Here you can find additional information on our welding units available for download:

Informational material:

Brochure PUK D5



Manual PUK D5


Pricelist PUK D5

Technical data PUK D5





Strength of current (TIG) min./max.
Pulse duration (WIG) min./max.
Welding speed
Max. charging time
Number of metal programs
Number of custom programs
Gas consumption
Shielding gas


Power consumption during welding
Power consumption during no load operation


9 - 400 A

0.5 - 34 ms

up to 2 Hz

0.8 sec.



approx. 2 – 3 l/min

Argon > 99.9 %

e.g. Argon 4.6

400 VA

7 W

7.8 kg


The PUK scope of delivery


The PUK welding system is delivered with the following accessories and contains all necessary documentation and instructions:

  • The PUK welding system with the selected welding microscope including the welding handpiece
  • 3 different contact clamps, retention welding adapter (set of Ø 1.2, 1.3, 1.5 and 2 mm), foot switch, gas hose, cleaning brush and connecting cable
  • A small welding course with brief instructions, some stainless steel sheets and welding wire
  • Manual
  • DVD with videos and information
    in 5 languages


Mohan Chandie Shaw

Master Goldsmith / Designer / Stone setter
The Hague, the Netherlands

With my PUK I design, create and repair jewelry faster, better and more complex.


read more 

After using the Lampert PUK 2, I immediately bought the PUK 3 professional plus when it came out. It has almost the same possibilities and applications as a laser but you pay less. It is built as a tank so it has little to zero maintenance. With the PUK 3 I design, create and repair jewelry faster, better and more complex. In my point of view Lampert stands for high quality and innovation in the field of jewelry making. Lampert provides individual support and understands what you need as a professional.

Veselin Tenev

Master Jeweller
Royal Tunbridge Wells, Kent, United Kingdom

Actually, my dealer in the UK has told me when I have bought the machine only two words ...
"Have fun!"

read more 

We are so delighted to have the PUK and to work with it. Specially me, with those many years' experience behind. The PUK welder is my right hand and I couldn't imagine not having it even for one day away from me! Actually, my dealer in the UK has told me when I bought the machine only two words ...
"Have fun!" as a wish!
And thinking today, I am really having fun, enjoying working and discovering how pleased anyone can be to create things with it.

Christa Fischer


After my vocational training I have learned one more enriching technique besides the typical craftmanship – using a PUK welder.


read more 

After my vocational training I have learned one more enriching technique besides the typical craftmanship – using a PUK welder.
It makes my daily work much easier and I really enjoy working with it every time because it offers completely new opportunities, e.g. when working close to sensitive stones. The machine provides a special default for building up worn settings or for reattaching a broken ear stud without having to solder. Furthermore, I can facilely close pores and/or apply welding wire. The PUK's operation is very simple and it enables me to easily work on jewellery in a lot of different manners.


Dr. Daniela Zaharia

Bucharest, Romania

The PUK D5 opens a whole new world of design possibilities ... and is the ideal partner
in the digital printing era.

Daniela Zaharia (@dr_daniela_zaharia)

read more 

I’m an orthodontist and I love working with my patients. But I also like to work behind the scenes making some of the appliances I use. PUK D5 opens a whole new world of orthodontic appliances’ design possibilities. Design it and then is easy to make it. Nothing is impossible. PUK D5 machine is the ideal partner in the digital printing era and it makes me feel like an artist in orthodontics’ field. It helps me to achieve great results.

Daniela Zaharia (@dr_daniela_zaharia)

Kevin Paul

Watchcase restorations
Vienna, Austria

I can recommend the PUK without any doubts!




read more 

For my watchcase restorations I use the PUK on a daily base. It makes my day so much easier due to its quick and easy accessibility. I can recommend it without any doubts!


Steffen Dülk

Master Goldsmith / Münsterschwarzach Abbey
Vier Türme GmbH Gold- und Silberschmiede

Our entire team benefits from the PUK04 and its versatile fields of application.



read more 

We have to carry out a broad variety of works in our goldsmith’s workshop of the abbey. From filigree engagement rings made from platinum to rather big sacral utensils made from silver or tombac. That’s why our entire team benefits from the PUK04 and its versatile fields of application. It is extremely helpful for us for goldsmith’s productions, repairs or for the manufacture of new decorations for churches.



Studio Loubser

Bespoke Jewellers / South Africa

Our PUK welder has become an integral part of our workshop ... We are able to work accurately and effeciently, avoiding time-consuming manufacturing and repair processes.

read more 

Our PUK welder has become an integral part of our workshop, there is no repair challenge that we cannot face with confidence.


The PUK welder allows for small scale precision work, focussing heat in specific areas, allowing to weld close to gemstones and pearls. The concentrated generation of heat enables us to hold the pieces by hand whilst welding, thus there is no need for binding wire or the complex positioning of the pieces whilst soldering. We are able to work accurately and efficiently, avoiding time-consuming manufacturing and repair processes. We even use the PUK welder for our pre-positioning of claws before soldering on complex pieces occasionally.


The small scale and snazzy appearance of the welder blends into our workshop with ease.


It is however, worth mentioning that using the PUK welder is a skill that has to be learnt, you have to spend time becoming accustomed to using the machine, in order to use it to its maximum capacity.


Practice makes perfect.



Lev Shneiderman

Metal artist / Israel

 This tool is a real asset to any artist’s workshop!




read more 

As a veteran metal artist specializing in both traditional and modern technics, I see the Lampert PUK 5 as an essential tool for my studio. The PUK 5 enabled me to significantly upgrade my manufacturing process and provide more freedom with my art designs. The PUK 5 shortens the time it takes to build a construction. It allows handling seams and soldering more effectively and in a shorter time.


This tool is a real asset to any artist’s workshop!



Arkadiy Chernikov

New Westminster, Canada  

I consider this micro welding machine to be one of my best tool investments. 



read more 

I have purchased a PUK five years ago to expand my TIG welding to micro level, and never regret for that. Reliability, super easy to start, fast learning curve and lots of hidden capabilities for custom pulse programming - that's exactly what I was looking for. Besides, I would add reasonable argon consumption and ability for micro spot-welding. Maintenance is minimal: just re-fill the argon bottle and have your tungsten clean and sharp.  


For readers in North America: Robert from Lampert Tools USA in Chicago provides unbelievable help with order, shipment and delivery, and after I got my machine he gave me free one-day course for micro welding basics. Further customer support and getting consumables is fast, friendly and professional. I consider this micro welding machine to be one of my best tool investments. 

Michael Berger

Goldsmith and Kinetic

I can hardly imagine a work process without the PUK anymore.



read more 

There’s really not one day going by in the workshop without the PUK. How quickly this device has made itself indispensable was astonishing - I can hardly imagine a work process without it anymore.


Jointing my kinetic works made of stainless steel has particularly become child’s play with the PUK and opened completely new ways of fabrication. No matter if it’s tiniest mechanical elements, sheet metal constructions with a thickness of only 0.3 millimeters or big room sized works, I apply the PUK everywhere and it gets the job done reliably and with a high standard. 


The PUK - a tool that I’ve grown fond of and that I want to warmly recommend to all colleagues.




Workshops News

You are interested in the possibilities of use of our fine-welding devices? Or you are searching for one or another tip on working with your PUK? Then just sign up for our Workshop-News on this webpage.


We do not offer an ordinary advertising newsletter, our only intention is to support our customers. At regular intervals, we present small suggestions or examples for correct work with the PUK, so you may use our technology as efficiently as possible.


Show workshop examples

Lampert Werktechnik GmbH
Ettlebener Strasse 27 · 97440 Werneck · Germany
Tel. +49 9722 94 59 - 0 · Fax +49 9722 94 59 - 100 · mail@lampert.info