How it all began


EDGE Welding Supply is a family business. Welcome to the family!

EDGE Welding Supply has been working with glass for more than 40 years, primarily on the medical side, creating lab equipment that requires extreme precision and durability.

We set out to produce a welding cup that was just as durable, if not more so, as the cups that dominate the welding landscape, but was made out of glass.

Today, we produce an extensive line of welding cups that can accommodate all makes and models of welding equipment as well the ability to create custom solutions as needed.

EDGE Welding Cups are the most premium line of scientifically engineered pyrex glass welding cups on the market to date.  Each of our welding cups, diffusers, and attachments are expertly designed to provide exceptional performance and offer superior visibility for GTAW/TIG Welding projects.  EDGE Welding Cups are extremely durable, high-quality and high-temperature cups and offer incredible potential for the welder.  EDGE Welding Supply offers a wide range of sizes and shapes and has recently introduced the EDGE Shorty Series as well as the EDGE Q Series.  If you are not finding a specific cup size we do offer to create a custom cup to fit your necessary specifications.

We are extremely dedicated to providing exceptional support and knowledge of the pyrex and quartz welding cups.  Each and every customer is treated as a highly valued patron of EDGE Welding Supply.  We diligently strive to develop trust and loyalty from each transaction to earn your business and guaranteed satisfaction. If you are uncertain about whether EDGE Pyrex and Quartz cups are the right fit for your welding need, our excellent support team is available to discuss any information you may have before you purchase and can make expert recommendations based on your projects needs.  EDGE Welding Supply is constantly envisioning  and introducing new and innovative concepts within the welding products industry so that our customers are constantly kept informed and knowledgeable of all new technologies dedicated to GTAW/TIG Welding.   Our products are currently used in the following areas” TIG Welding, Welding Fabrication, Rig Welding, Automated Welding, Orbital Welding, Aviation, and much more.

We are here for all your GTAW/TIG Welding needs, let us know what we can help you with.  We graciously look forward to having you as member of the EDGE Family!

Overwhelming Demand

We knew our welding cups would be a big hit, we just didn’t realize how big and we didn’t realize the doors that would continue to open.

What started as a single product has spawned into dozens more, with custom designs now consuming the majority of our efforts.

EDGE Welding Supply has recently completed major rebrand that allows us to pivot away from a single product and transition into a full-service welding parts and equipment supplier for all of your welding needs.

The Future is bright

Over the coming months, be on the lookout for EDGE Welding Supply as we partner with the largest vendors and manufacturers in the world.

These efforts are designed to allow our current and future clients to get everything their business needs within the welding industry from a single source they can trust.

We’re not just here to make a profit, we’re here to make a difference and secure partners for life.

After all, it’s all about relationships – now, and into the future.

What you can expect from us


Integrity matters. You’ll never have to worry about us playing games with your business.

We Care

We truly care about our customers and quality of our products.


We’re always available to discuss your needs and figure out solutions, together.


We’re passionate about pursuing innovation and creating products most shy away from.

EDGE Welding Cups Pyrex Recommendations


EDGE  1/16 Diffuser must not be used above 80A (DC) 

GL920, GL1718, CB920. CB1718 (P4-10) Pyrex

*We recommend DC only, 180 amp unless using pulse settings.

Can be used with any size and type electrode.

*Best used with metals such as Stainless steel, Titanium and Inconel.

*Aluminum based material should use with #10 or #12 in shorter runs

*We do not recommend walking the cup with Pyrex glass cup.  (This will cause premature failure)

GL920-P12, GL920-P15 AND GL920-18

*We recommend DC only, 180 amp unless using pulse settings.

*Best used with metals such as: Stainless steel, Titanium, Inconel,Nickel based & thin aluminum   based.

*Recommended use with 1/16, 1/8 and 3/32   (2.4) electrode.

*The tungsten can be extended up to 3” out in controlled environment  for clearance.

*We do not recommend walking the Pyrex glass cup.  (This will cause premature failure.)

EDGE Quartz for aluminum we still recommend DC, but can be used at Higher Temperature ratings