GTT Cobra Glass Torch

The GTT Cobra is one of Glass Torch Technologies’ furnace-class burners, a three-stage, 130-jet Triple Mix torch built around a 7-jet Lynx center, a 33-jet Mirage middle, and a 90-jet Cobra outer fire. It offers the Lynx, Mirage, and a wide Cobra flame in one torch, and it’s built for fast melt-ins and production at a scale most makers never need. This is heat for moving large masses of glass quickly.

What the three-stage Triple Mix flame gives you

Triple Mix is GTT’s surface-mix technology: fuel and oxygen meet at the face of the torch, keeping the mixing chamber cool and giving a clean, penetrating flame that drives heat into the core of thick glass rather than just washing the surface. With three stages and a 90-jet outer, the Cobra spans from a fine Lynx center flame to a furnace-size soaking flame. For the underlying tech see GTT Triple Mix technology and surface mix vs premix torches; for why penetration matters on heavy boro, read soaking vs penetrating flame.

Who the Cobra is for

The Cobra suits advanced makers and production studios who genuinely need furnace-size heat and fast melt-ins, high-volume boro production rather than detail or soft-glass beadwork. Its oxygen appetite and price put it firmly at the top of the line.

Glass, fuel, and oxygen

The Cobra burns propane or natural gas with oxygen. GTT’s Flow Rate Chart, measured on propane at the largest usable flame, lists it at 20 psi fuel and 80 psi oxygen; GTT notes natural gas burns roughly 2.5 times the propane volume, and GTT torches on natural gas covers house lines. As a three-stage furnace-class torch its oxygen demand is very high, realistically a substantial tanked-oxygen supply or many concentrators. Our catalog carries a ~65 LPM reference converted from GTT’s flow table for the largest usable flame; size your supply to the flame you actually run and confirm with GTT. Start with how many LPM does my torch need and plan your supply with oxygen concentrator vs tanks.

Where it sits in the GTT lineup

The Cobra is near the top of GTT’s range, among the furnace-size three-stage torches alongside the Viper. It’s built on the same Lynx center and Mirage middle as the rest of the line, so even at this scale the flame behavior is familiar, the Cobra simply wraps a very large outer fire around a core you already know.

What GTT sells

GTT sells the Cobra with its Mirage middle fire at $5,500 and with its compressed-air option, where GTT’s own pages show two different prices. The version picker at the top of the Specs section lists each one with GTT’s own name, its price as GTT’s pages showed it on 2026-10-06, and what GTT’s listing says about it; prices change, so confirm with GTT.

GTT’s three-stage instruction sheet describes nine valves (red fuel, green main oxygen and blue secondary oxygen for each of the three fires) and sets fuel at 20 psi and oxygen at 80 psi, matching the Flow Rate Chart, which lists 138 CFH of oxygen at the largest usable flame. The torch sits on 6 studs with rack-and-pinion adjustment on a powder-coated base. It ships with 2 feet of 3/16 inch hose and screened adapters for 1/4 inch ID grade T hose, with 2 feet of 1/4 inch grade T hose on the outer studs, plus the base, instructions and a cleaning kit, and a DVD on GTT’s store listing. Custom color adds $200. For the air option, GTT specifies clean, dry air regulated to 60 psi or lower. GTT gives no delivery date and notes that material availability can delay torches.

Before you buy

Budget for the whole system, not just the torch: an oxygen supply sized to a furnace-class torch, the correct propane or natural-gas regulator, flashback protection matched to your torch and gas supply, didymium or boro-rated eyewear matched to your glass, and serious ventilation. New to plumbing a torch this size? Start with the fittings, hoses & connectors guide and the glass torch safety setup guide. On the torch itself, GTT’s servicing page states a one-year warranty against factory defects that does not cover damage from improper use, misuse, or neglected maintenance; if you’re buying used, work through the used GTT torch checklist.

Editor’s note: spec details reflect GTT’s own materials. The catalog’s ~65 LPM oxygen figure is converted from GTT’s flow table for the largest usable flame (a ceiling, not a minimum), and current configuration details should be confirmed with GTT before purchasing.