Here is your most recent issue of High Current News. It's packed full of information to keep you updated with the latest MIG & TIG news, product information and updates from D/F MACHINE SPECIALTIES.

D/F is a world leader in the design, development, and manufacture of MIG & TIG welding products, consumables & accessories.

NEW D/F Product Catalog

D/F CatalogD/F has released a brand new color product catalog! Featuring the most popular D/F MIG & TIG welding equipment, accessories and consumables, the catalog will cater to your informational and ordering needs.

You can request your own free copy of the catalog in two ways:

1. Email D/F at with your name, and your company's name and address of where you would like the catalog to be sent.

2. Fill out the reservation form located here.

DownloadClick to download the catalog in digital form as a PDF.

D/F Water-Cooled MIG Pistol - Pushing Aluminum

D/F PistolWith more than 44 years of welding experience, the D/F Machine Specialties Water-Cooled Semi Automatic MIG Pistol Grip Gun Model NC-21/HT-21 has proven itself continuously throughout its life, particularly in push welding aluminum trailers. The D/F Pistol is ideal for pushing 3/64", 1/16" and 3/32" aluminum wire up to 15' from the drive roll stand. It is built for use with all wire feeders that have a provision for water-cooling, and will handle all types of wire from .035" through 1/8" diameter. Because of its quality and durability, the D/F Pistol will last years and years vs. months, and will outlast any push-pull gun on the market at 1/2-1/3 of the cost. Maintenance is made easy with the D/F Pistol because of its few parts and simple maintenance.

Trailer Manufacturing
When manufacturing high quality aluminum trailers, it is important to consider longevity and strength of the weld joints. With aluminum in particular, it is somewhat of a fine-tune process to get a weld that will penetrate correctly with slightly higher heat and slightly lower travel speed. Also, choosing the correct wire size is crucial to an optimally strong aluminum weld. Since the D/F Water-Cooled Pistol Gun can handle a wide range of wires, and can hook up to any power source and wire feeder to accept any necessary welding parameters, it is a superior choice for manual MIG aluminum welding and trailer manufacturing.

Pushing Aluminum Wire
Feeding aluminum wire through a push only system is very advantageous. Because push-only guns like D/F Pistol Gun can hook up to any manufacturer's wire feeder and power source, large 500 lb spools of wire can be used reducing expenses, down time, and wear and tear on the torch by the changing of spools as in a spool gun. A spool gun needs to have the roll changed after every pound of wire is used, compared to the large size spools used in a D/F Pistol Gun. Also, the chance of burn-back exists when the end of a spool is reached, so many operators stop when a few turns are left on the spool.

Push Welding vs. Push-Pull Welding
A push gun also has advantages over a push-pull gun for many reasons. Typically, the greatest disadvantage of moving wire over long distances with a push-pull system is that it requires the most number of components and is the most expensive. It is very easy to mount a D/F Pistol Gun on a boom system to take all of the weight off of the gun. By mounting the wire feeder and power source on a 4-wheel cart, you can now travel great distances very easily. Push-pull guns are also very fragile and do not last as long (months vs. years). Push-pull guns are 2-3 times more expensive than the D/F Pistol. They only last up to 9 months on average, and you either have to replace the torch or rebuild by installing a new motor costing as much as $400-plus. Lastly but most importantly, because the D/F Pistol uses a 4" contact tip that is recessed in the water-cooling, not only is the arc stability increased, the tip life is increased 7-1, and there is built-in wire straightening. If the operator is using several pounds of aluminum per day, the few minutes need to change spools or replace motors can add up.

Click here   to read more about the D/F Water-Cooled MIG Pistol Grip Gun.

If you have any questions about aluminum trailer manufacturing, push welding aluminum, or about the D/F Pistol Gun itself, please do not hesitate to contact the factory.

32x32 logoPhone: (507) 625-6200 · Email:

We look forward to helping you with your welding applications!

Frequently Asked Questions

D/F has now added a Frequently Asked Questions page to the website! This page will be continually updated with information about Torch Maintenance, Welding Practice & Setup, Warranty & Refurbish, Troubleshooting, and more in hopes of fulfilling the needs of anyone who might have a common question about D/F's equipment or welding in general. Please visit the FAQ page.

Do You Have Photos of Projects? Submit Them to WIN!

D/F's new Photo Gallery showcases D/F equipment in action over the years, and we are constantly adding to the gallery. We want to see how our equipment helps brings out the best of your creativity and skill, or simply how your equipment is setup and used.

D/F Gallery

Submit your photos and projects to:

For project submissions, things to include:

  • Photos of your project
  • What did you make?
  • How did you make it?
  • Which D/F products did you use?

Project submissions will be put in a drawing for a chance to Win A Gift Card to your local Best Buy Consumer Electronics Store.

Check out the D/F Photo Gallery here.

Words from the Editor

Greetings from D/F!
Thank you for reading our High Current News e-newsletter. Please share this issue with a friend and send us your comments.

Best Regards,
Dave Judd, Editor
D/F Machine Specialties, Inc.

D/F Machine Specialties


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In This Issue

• NEW D/F Product Catalog
• D/F W/C Pistol - Pushing AL

• Frequently Asked Questions

• Got Projects? Submit to WIN!

• New Products

• Nozzle Thread Chaser Taps

New Products - Automatic Curved Machine Torches

W/C Curved MIG Torches
The versatile D/F curved quick-change Water-Cooled Automatic 500 amp Torch Models NCC/LRN and HTC/LRN can be used for a wide range of automatic applications. With the various angles (22° through 90°) and lengths available, a selection may be made to suit individual requirements.

Read More

Nozzle Thread Chaser Taps

Nozzle Thread Chaser Tap
The New D/F Nozzle Thread Chaser Taps are designed to chase and tap nozzle threads to clean and repair them for better conductivity and contact.
• Chasing will clear debris,
   metal filings and spatter
• Re-tapping will straighten and
   clean damaged threads
• Tap sizes available for all D/F
   Nozzle Assemblies

Read More

Your Downloads
Did you know you can download all of D/F's Catalogs, Instruction Manuals and CAD Files at D/F's Online Download Center?
Visit the Download Center online ad D/F's web site for more information.

Contact D/F

Product Info: 1-507-625-6200
Fax: 1-507-625-6203
Online: Contact D/F

D/F Machine Specialties, Inc.
1750 Howard Drive
North Mankato, MN 56003

Semi-Automatic MIG

Automatic MIG

Robotic MIG

Automatic TIG

Robotic TIG



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© logo D/F Machine Specialties, Inc.
1750 Howard Drive
North Mankato, MN 56003
Phone: (507) 625-6200
Fax: (507) 625-6203

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D/F Machine Specialties
1750 Howard Dr.
North Mankato, Minnesota 56003

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