Genuine EDGE™ Chisel Series TIG Cups
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Find the right solution for your setup
Need Help Choosing the Right Setup?
Choosing the right equipment depends on your application, material, and welding conditions.
- For more control and precision → use smaller components and tighter setups
- For more coverage and larger welds → use larger setups and higher gas flow
- For high-heat applications (like aluminum) → use materials designed to handle increased temperatures
- For tight spaces → use more compact profiles
If you’re unsure what you need, start with a complete setup or kit and build from there.
Got questions?
Feel free to get in touch
Questions? Contact us.
When Round Gets in the Way.
EDGE™ Chisel Series Laminar Flow TIG Cups are designed for tight-clearance and restricted-access TIG welding where round cup geometry can limit torch position, tungsten placement, or shielding coverage.
The narrow rectangular profile helps get the tungsten where it needs to be while providing a long, directional shielding area that can be indexed to match the weld.
Key Benefits
- Narrow rectangular profile for tight and restricted spaces
- Directional shielding along walls, seams, fins, and obstructions
- Improved access and torch positioning
- Indexable cup orientation
- Secure, gas-tight connection
- EDGE Laminar Flow with our proprietary EDGE Diffuser
- Extended reach for pockets and recessed welds
- Clear glass construction provides visibility around the weld area
Choose Your Chisel
Chisel 412
Approx. Outside Dimensions: .265 x .590 in (6.7 x 15.0 mm)
Available Straight Rectangle Reach:
- 1.5 in (38 mm) — Chisel 412-1.5
- 2.0 in (51 mm) — Chisel 412-2.0
Chisel 610
Approx. Outside Dimensions: .338 x .503 in (8.6 x 12.8 mm)
Available Straight Rectangle Reach:
- 1.5 in (38 mm) — Chisel 610-1.5
- 2.0 in (51 mm) — Chisel 610-2.0
Chisel 816
Approx. Outside Dimensions: .412 x .734 in (10.5 x 18.6 mm)
Available Straight Rectangle Reach:
- 1.5 in (38 mm) — Chisel 816-1.5
- 2.0 in (51 mm) — Chisel 816-2.0
Outside dimensions and straight-reach dimensions are approximate. Each EDGE glass TIG cup is individually handcrafted, and dimensions may vary slightly. For applications with critical clearance requirements, contact EDGE before ordering.
Indexable Directional Shielding
The EDGE adapter system allows the Chisel cup to rotate and index independently of the threaded gas-lens connection while maintaining a secure, gas-tight fit.
This allows the rectangular profile to be positioned for the weld geometry, torch angle, travel direction, available clearance, or automated setup.
EDGE Laminar Flow
Chisel Series cups incorporate our proprietary EDGE Diffuser to condition and distribute shielding gas through the rectangular outlet.
Combined with the indexable rectangular profile, EDGE Laminar Flow provides controlled, directional shielding for difficult-access TIG applications.
Built for Difficult Welds
The Chisel Series is designed for specialized TIG/GTAW applications where access, clearance, and shielding geometry matter.
Potential applications include:
- Aerospace and aeronautical welding
- Robotic and automated welding
- Turbine and power-generation applications
- Nuclear applications
- Lathe and rotary welding
- Deep-pocket welding
- Narrow-groove applications
- Restricted-access welding
- Welding alongside walls, fins, flanges, fixtures, and other obstructions
Torch Compatibility
WP-9 / WP-20 / WP-25
2 Series gas-lens platform
WP-17 / WP-18 / WP-26
4 Series Stubby gas-lens platform
Gas lens, collet, tungsten, and EDGE adapter selection depends on the torch and tungsten configuration.
Material
Pyrex / borosilicate glass
Need Something Different?
Not every welding problem fits a standard solution.
If your application requires additional reach or a specialized configuration, contact EDGE to discuss your application.
Tell us what you're trying to reach, clear, or shield.
Handmade by EDGE
Each EDGE glass TIG cup is individually handcrafted in North Carolina. Minor dimensional and cosmetic variations are natural characteristics of hand-formed glass.