EDGE® Quartz Cup with 3/32" Diffuser

EDGE® Quartz Cup with 3/32" Diffuser - View 3

EDGE® Quartz Cup with 3/32" Diffuser - View 4

$25.55 ~~$38~~ In stock

This is a MUST HAVE for welding aluminum! EDGE® Quartz cup with 3/32" diffuser. Hand-made in the U.S.A. with laboratory grade quartz. A great option for welding aluminum and for other higher temperature welding applications! #10 and #12 size cups available. Sold individually. Each cup measures 0.75" x .075" x 1".

EDGE Welding Supply Pyrex Cup Recommendations:

♦ The EDGE adapter and EDGE cup must be fully seated onto the Teflon heat/thermal shield.

♦ Can be used with any size and type of tungsten unless using diffuser technology.

♦ All sizes can be used with EDGE diffuser technology.

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Julian ★★★★★ Oct 22, 2026

The laboratory grade quartz handles the heat from aluminum welding without any discoloration, and the hand-made fit is flawless. I've run a full tank of gas through it and the 3/32" diffuser keeps the arc stable the entire time.

Timothy O. ★★★★★ Oct 21, 2026

The 3/32" diffuser makes a noticeable difference in heat distribution compared to standard cups I've used before. Hand-made quality is evident in the clean, precise quartz finish. It handles the higher temps of aluminum welding without any issues.

Brian ★★★★★ Oct 20, 2026

Been using this quartz cup for a few weeks on aluminum TIG jobs and the 3/32" diffuser makes a real difference in gas coverage. The hand-made quality is obvious in how clean the bead comes out, and it handles high heat without any discoloration so far.