How is the Ninja different from the Samurai?

Both are three-stage, 72-jet Triple Mix torches sized between the Kobuki and Delta Mag. The Ninja uses a 15-jet Phantom middle with a 50-jet outer; the Samurai uses a 33-jet Mirage middle with a 32-jet outer. The difference is how the jets are distributed across the stages.

Can the Ninja run on an oxygen concentrator?

It's a three-stage production torch, so its oxygen demand is well beyond a single small concentrator. GTT doesn't publish exact LPM, so plan around tanked oxygen or multiple concentrators and confirm with GTT.

Is the Ninja a good first torch?

No, it's an advanced, production-class burner. Beginners should start with a single-stage GTT like the Bobcat or Cheetah and a much smaller oxygen supply.

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GTT Ninja: a compact three-stage, 72-jet Triple Mix production torch

Name: Glass Torch Technologies Ninja
Brand: Glass Torch Technologies
Price: 4000 USD

GTT Ninja · Bench torch · Surface mix

The GTT Ninja is a three-stage, 72-jet Triple Mix (surface-mix) production torch, a 7-jet Lynx center, a 15-jet Phantom middle, and a 50-jet outer, sized between the Kobuki and Delta Mag with a compact body to work behind, and a compressed-air option.

Specs

Mix type: Surface mix
Mount: Bench
Oxygen (estimate): n/a
Fuel: Propane, Natural gas
Skill level: Advanced
Glass: Soft, Boro
Best for: Production, Large boro, Fast melt-ins
Price: ~$4,000 (reference)
Jets: 72
Stages: 3

Treat the oxygen figure as a rough sizing estimate, not a specification. Depending on the model it may be manufacturer full-flame consumption, a converted flow figure, or a documented estimate, and delivered pressure and purity matter as much as flow. What actually drives a torch choice is the glass, the work, and the flame, so size your oxygen supply after you pick the torch. Prices may be manufacturer list prices or observed dealer references. Use the evidence label and sources below, then confirm the exact configuration before buying.

Overview

The GTT Ninja is one of Glass Torch Technologies’ three-stage production burners, a 72-jet Triple Mix torch built around a 7-jet Lynx center, a 15-jet Phantom middle, and a 50-jet outer fire. It’s sized between the Kobuki and Delta Mag, but its calling card is a compact body that’s easy to work behind, a lot of heat without a lot of torch in your way. It’s aimed at fast melt-ins and production, and it can be ordered with GTT’s compressed-air path.

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, which is what large boro and fast melt-ins demand. Three stages let you keep a fine center flame available while having a big soaking flame on tap. For the underlying tech see GTT Triple Mix technology and surface mix vs premix torches; for why penetration matters here, read soaking vs penetrating flame.

The compressed-air option

The Ninja can be ordered with GTT’s compressed-air path, which injects air into the fuel system so you can lower flame temperature while keeping the same flame chemistry and flame type. It’s a useful lever for tuning the flame without otherwise changing how the torch behaves. The full explanation is in GTT compressed air & 4-Way Mix.

Who the Ninja is for

The Ninja suits advanced makers and production studios who want big-torch heat and fast melt-ins but value a compact body they can work close behind. It isn’t a soft-glass bead torch and it isn’t a beginner’s first burner.

Glass, fuel, and oxygen

The Ninja burns propane or natural gas with oxygen and runs both boro and soft glass, with its center of gravity firmly in large boro. As a three-stage production torch its oxygen demand is high, realistically tanked oxygen or multiple concentrators. GTT doesn’t publish the Ninja’s exact LPM, so size your oxygen to your work and confirm with GTT. Start with how many LPM does my torch need.

Where it sits in the GTT lineup

The Ninja slots between the Kobuki and Delta Mag among GTT’s three-stage production torches, and it’s a close sibling of the Samurai, same 72-jet, three-stage idea, but with the jets distributed differently (the Ninja runs a Phantom middle and 50-jet outer; the Samurai a Mirage middle and 32-jet outer). All are built on the same Lynx center, so the flame behavior is familiar across the line.

Before you buy

Budget for the whole system, not just the torch: an oxygen supply sized to a three-stage production torch, the correct propane or natural-gas regulator (plus an air source if you take the compressed-air option), 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.

Editor’s note: spec details reflect GTT’s own materials. GTT doesn’t publish the Ninja’s exact oxygen flow (LPM) and current configuration details should be confirmed with GTT before purchasing.

Fit and tradeoffs

Best for: Advanced makers and production studios wanting big-torch heat and fast melt-ins from a compact body that's easy to work behind.

Not for: Beginners, detail-only work, or anyone on a small single concentrator, this is a thirsty, production-class burner.

Pros

+ Three-stage Triple Mix: 7-jet Lynx center, 15-jet Phantom middle, 50-jet outer (72 total)
+ Sized between the Kobuki and Delta Mag for a lot of heat
+ Compact body that's easy to work behind
+ Built for fast melt-ins and production
+ Optional compressed-air path to tune flame temperature without changing flame type

Cons

− High oxygen appetite, plan a tank or multi-concentrator supply
− Pro price band; a serious production investment
− Built for large boro, not soft-glass beads or fine detail alone
− Some oxygen figures are converted from CFH and prices vary by configuration; confirm the exact setup with GTT

Flame notes

3-stage Triple Mix: 7-jet Lynx center + 15-jet Phantom middle + 50-jet outer = 72 jets total. Sized between the Kobuki and Delta Mag; compact body to work behind. Compressed-air option available.

Maker

Glass Torch Technologies

USA

Focus: Boro, Production, Pipe, Soft

Tioga, Pennsylvania maker of standard surface-mix, patented Triple Mix, and 4-Way Mix glassworking torches. GTT says it machines, builds, and tests its torches by hand.

Visit website →

Compared with

Head-to-head guides that put the Ninja against other torches.

GTT Ninja vs Samurai: Phantom or Mirage Middle Fire?

FAQ

What is the GTT Ninja built for?: Large boro and fast production melt-ins. It's a three-stage, 72-jet Triple Mix torch, a 7-jet Lynx center, a 15-jet Phantom middle, and a 50-jet outer, sized between the Kobuki and Delta Mag, with a compact body that's easy to work behind.
How is the Ninja different from the Samurai?: Both are three-stage, 72-jet Triple Mix torches sized between the Kobuki and Delta Mag. The Ninja uses a 15-jet Phantom middle with a 50-jet outer; the Samurai uses a 33-jet Mirage middle with a 32-jet outer. The difference is how the jets are distributed across the stages.
Does the Ninja have a compressed-air option?: Yes. GTT offers a compressed-air path, which injects air into the fuel system so you can lower flame temperature while keeping the same flame chemistry and type. See our guide to GTT's compressed air and 4-Way Mix.
Can the Ninja run on an oxygen concentrator?: It's a three-stage production torch, so its oxygen demand is well beyond a single small concentrator. GTT doesn't publish exact LPM, so plan around tanked oxygen or multiple concentrators and confirm with GTT.
Is the Ninja a good first torch?: No, it's an advanced, production-class burner. Beginners should start with a single-stage GTT like the Bobcat or Cheetah and a much smaller oxygen supply.