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Flow regulator

Item no. 100 600

  • The PUK flow regulator:
    An important prerequisite for dependable welding results is the correct flow rate of argon gas.
  • The PUK flow regulator enables the exact setting of the recommended 2 litres per minute flow rate. It‘s precise and it‘s easy but above all, it’s reliable!
  • The flow regulator is specially designed for the low gas flow rates used in PUK welding.

Technical data

Max. inlet pressure
Adjustment range
 argon 4.6
230 bar
0 - 6 L/min
1.4 kg


Electrode grinding motor

Item no. 100 858

Technical data

Idle speed
Power consumption (12 V)
Dimensions (Ø x L)
11 000 rpm
max. 6 W
34 x 76 mm
approx. 200 g
  • Simple and rapid grinding of the PUK electrodes:
    The grinding motor is a useful accessory for every PUK welding device. Care of the electrode tips, which is vital to very good welding results, is carried out by the grinding motor in the blink of an eye.
  • Durable diamond grinding disc
    The diamond disc used has a very long service life. Replacement discs are available as accessories and can be changed with ease with the aid of the hex-wrench provided.
  • Simple and safe to use
    For grinding the electrode tips the electrodes are held onto the rotating diamond disc at a preadjusted angle of 15° and turned between the fingers using the suitable pilot hole in the diameter 0.5, 0.6, 0.8 or 1.0 mm. The diamond disc is securely embedded in a stable aluminium housing, so that only the front of the grinding surface is accessible.
  • Connection directly to the welding equipment
    The grinding motor is attached separately or to the combined connecting socket of the welding device, or, if already a pedal is connected there, with a T-connector (item no. 100 823). The motor is switched on by pressing a button located laterally on the motor housing.


Item no. 100 823

  • T-connector for a simultaneous connection of the foot pedal and the electrode grinding motor or of a welding microscope and the magnifying lens (LCD eye protection system).

Foot pedal

Item no. 100 850

  • The useful addition for your PUK
    As an alternative to the automated welding process, each weld can be triggered individually using the foot pedal. This can be a big help when only a minimum of working space is available.
  • For the goldsmith who is used to working with a foot pedal and prefers to work this way.

Napa leather glove

Item no. 100 730/731/732*

  • Highest touch sensitivity due to the finest goat napa leather, back of the hand is made of breathable cotton / polyester knitted fabric and ensures a very good fit and high wearing comfort.
  • The glove is designed for fine, low-powered PUK welds. For rougher work or welding with higher power, please use standard TIG gloves.
  • *Available in size 7, 8, 9

Standard TIG glove

Item no. 100 735/736/737*

  • This standard TIG glove is made of very soft goat napa leather and guarantees a good feeling and high wearing comfort despite the best hand protection.
  • The glove is recommended for PUK-welding with higher power.
  • *Available in size 8, 9, 10

Protective shield

Item no. 200 006

  • For mounting on the welding microscope.
  • Extended face protection for welding with or without handpiece holding arm.

All-purpose cleaner

Item no. 100 741

  • For pretreatment of welding material
  • 150 ml metal spray can

Contact pliers

Item no. 100 500

  • The flat pointed pliers are suitable for holding and securely contacting small parts.
  • The pliers are galvanically nickelled to achieve optimal conductivity.

Flexible contact strip

Item no. 100 695

  • The flexible contact strip is extremely suited to contacting workpieces on which the normal terminal cannot be used. Or for very sensitive parts and polished parts.
  • Length 100 cm

Raw cable

Item no. 100 696

  • Raw cable for creating contacting tools.
  • Length 100 cm
  • We deal with finishing individual contact tools in our workshop #23, which you can also download from our workshop archive.

Tack welding set PUK 4.1 / PUK 5

Item no. 100 845

  • You need the tack welding set to use the "tack welding" function.
  • The set consists of a foot switch and the blue 150 cm connecting cable with terminal.

Argon nozzle Ø 4 mm

Item no. 100 150-4

  • This inert gas nozzle with 4 mm nominal diameter has a 1.0 mm larger nozzle outlet than the standard 3 mm nozzle.
  • This nozzle is particularly advantageous when welding edges or very delicate structures, because the wider gas flow encloses such structures more completely.

Hand piece storage unit

Item no. 100 112

  • The hand piece storage unit is made of heavy-duty solid rubber and ensures safe storage of the hand piece.


Item no. 200 217

  • The headrest for PUK welding microscopes enables relaxed, fatigue-free work with the welding microscope.
  • Especially during longer welding tasks, the headrest helps you maintain concentration on the workpiece.


Item no. 200 219

Replacement cushion made of natural felt

Screen protector

Item no. 100 145

  • Screen protector accurately fitting the PUK 5 display.

Third Hand "Assistant"

Item no. 300 811 (consisting of items 100 300 and 300 812)

  • Excellent help for difficult welding situations such as ring sizing, fine repairs etc.

Microscope oculars for 15x magnification

Item no. 200 111


  • For maximum precision when welding.
    The microscope oculars with 15x magnification are particularly recommended for fine welding work, which demands an even higher degree of precision. The oculars fit all welding microscopes from Lampert and can be exchanged with ease, in just a few steps.

Technical Data

Field of view
Packaging unit
13 mm




Here you can find additional information on our accessories and spare and wear parts available for download


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