Best Torch for Borosilicate: Boro-Ready Picks by Budget and Size of Work

Short answer: The best torch for borosilicate is the one that delivers enough heat for the size of work you actually do — fed by an oxygen supply that can keep up. Boro softens at much higher temperatures than soft glass, so it needs an oxygen/fuel flame with real punch, not a gentle bead flame. For entry boro (pendants, small sculpture), the GTT Bobcat (about $275) is the standout value. For small and detail boro, the GTT Lynx (about $525) is the precision pick. Stepping up, the GTT Cheetah (about $645) and Nortel Red Max (about $712) add heat and range. For large boro and production, look at the GTT Mirage (about $1,975) or the Bethlehem Champion (about $1,825) — and budget for the oxygen those big two-stage torches demand.

If you’re still weighing the bigger decision — glass type, oxygen, fuel, budget — start with the complete glass torch buyer’s guide. This article zooms in on the boro-specific question.

Why boro demands more from a torch

Borosilicate (“hard glass,” roughly 33 COE) works at significantly higher temperatures than soft soda-lime glass. Soft glass softens well under 1,300°F, while boro doesn’t begin to soften until around 1,500°F and needs still more heat to move freely. That’s why boro work is done on an oxygen/fuel torch rather than an air/fuel flame: pure oxygen produces a much hotter flame, and it also gives you control over the flame’s oxidizing or reducing chemistry, which matters because many boro colors react to leftover oxygen in the flame. Sources: Wikipedia — Lampworking, Delphi Glass.

Two practical consequences follow:

• Bigger, hotter torches suit hard glass. Because boro melts at a higher temperature, dealers consistently note that larger, hotter torches are the better fit for hard glass work, while beginners are usually steered toward a small or mid-range boro-capable torch first. Source: Delphi Glass.
• Your oxygen supply becomes the real constraint. A hotter, bigger flame burns more oxygen per minute. Underfeed a boro torch and you get a weak, dirty flame no matter what the torch cost.

For the full material comparison — and whether boro is even the right glass for what you want to make — see soft glass vs boro vs quartz.

The oxygen question behind every boro torch

Before comparing models, size the oxygen. Small single-stage boro torches can run on oxygen concentrators: the Bobcat, for example, runs on a 5 LPM concentrator at minimum and is optimal around 8 LPM. Big two-stage torches are a different animal — Bethlehem’s own technical information puts a full flame on its larger burners at around 40 LPM of tanked oxygen, which is far beyond any single concentrator. That’s why large-work studios run tanked or stacked- concentrator oxygen, and why the torch decision and the oxygen decision have to be made together. Sources: Mountain Glass, Bethlehem Burners — technical information.

The details live in how many LPM does my torch need and oxygen concentrator vs tanks for lampworking.

Entry boro: GTT Bobcat — about $275

The GTT Bobcat is the value pick for getting into boro, and it’s not close. It’s a single-stage, 7-jet surface-mix (Triple Mix) bench torch that GTT rates from a 2-inch pinpoint up to a 9/16-inch by 13-inch flame — enough for 1.5-inch solid boro and boro pendants to about 3 inches without changing anything on the torch. Just as important for a first boro setup, it runs on a 5 LPM, 5 psi concentrator (optimal at 8 LPM, happy on 10 LPM or tanks), so your oxygen bill stays sane. It’s pitched at beginner-to-intermediate makers and handles soft glass too, which is why it also anchors our best beginner glass torch guide. If your boro ambitions are pendants, marbles, and small sculpture, start here. Source: Mountain Glass.

Small and detail boro: GTT Lynx — about $525

The GTT Lynx is the precision option: a single-stage, 7-jet pinpoint Triple Mix torch that intermediate and advanced artists favor for fine detail, stringer work, and small boro. It isn’t a heat monster — it’s the opposite, a tight, controllable flame that puts the heat exactly where you point it. That makes it a superb detail torch for boro line work, and the same Lynx fire is the center stage of GTT’s larger torches (including the Mirage below), so the flame behavior you learn transfers upward. If you’re choosing between it and the Bobcat, our Lynx vs Bobcat comparison walks through it: range leans Bobcat, precision leans Lynx.

Step-up boro: GTT Cheetah and Nortel Red Max

GTT Cheetah — about $645

The GTT Cheetah is GTT’s “a lot of heat in a small torch” burner: a single-stage Triple Mix torch with 13 outer ports around a 3-port center fire. Its flame is broader and bushier than the needle-fine Lynx — better for soaking a boro prep in heat — while staying gentle enough for delicate colors. GTT describes a hot, penetrating flame that adjusts from pencil-thin up to a long, wide working flame. If you want one single-stage torch with more thermal headroom than a Bobcat, this is the step up; the flame-shape trade-off against the Lynx is covered in Cheetah vs Lynx. Source: GTT — Cheetah.

Nortel Red Max — about $712

The Nortel Red Max is the versatile two-head alternative: a surface-mix bench burner with a 45-port lower head (flame to about 1.25 inches) plus a swappable top burner (Minor, Mega Minor, or a premix head). It runs soft glass and boro, and Nortel positions it as efficient on oxygen for what it does — a big part of why it stays on so many intermediate benches. The two-flame arrangement is genuinely useful for boro: bulk heat below, a smaller working flame on top. It’s a generalist rather than a boro specialist, but a very capable one. Source: Nortel — torches.

Large boro and production: GTT Mirage and Bethlehem Champion

GTT Mirage — about $1,975

The GTT Mirage is one of the most popular two-stage torches in GTT’s line for a reason: a Lynx 7-jet center fire wrapped in two outer rings, 40 jets total, delivering flames from a soft bushy soak to a hard driving flame. It’s an advanced, large-boro and production torch — tubing, big sculpture, pipe work — and the four-stud manifold lets you split oxygen sources (for example, a concentrator on the center fire and tanks on the outer fire). Because the center is a Lynx, you keep a true detail flame inside the big torch. Source: GTT — Mirage.

Bethlehem Champion — about $1,825

The Bethlehem Champion is the other serious large-work contender: a two-stage, stainless steel surface-mix bench burner with separately controlled inner and outer flames (one gas and one oxygen valve per stage, four-port manifold), a redesign of Bethlehem’s long-running PM2D. Its low-velocity flames stay gentle on the glass across a wide range of fuel mixtures, and Bethlehem builds for both soft and borosilicate glass across its line. Plan tanked oxygen for full-flame work — Bethlehem’s technical figures for its big burners run to roughly 40 LPM at full flame. Sources: Bethlehem Burners — Champion, Bethlehem Burners — technical information.

Quick comparison: boro-capable torches

Prices are approximate MSRP; oxygen figures are manufacturer guidance where published. Confirm current configurations and numbers with the maker or a trusted dealer before you buy.

Which should you buy?

• First boro torch on a home-studio budget: Bobcat. Real boro capability on a single concentrator, at the lowest price here.
• Detail-focused boro (line work, small sculpture): Lynx. Precision over raw heat.
• One single-stage torch with maximum headroom: Cheetah. More heat, bushier flame.
• One versatile bench torch across soft glass and boro: Red Max. The two-head range is hard to beat at the price.
• Large boro, tubing, or production: Mirage or Champion — and price the oxygen system alongside the torch, because at this scale it can cost as much as the burner.

Don’t forget fuel and safety

All six torches run propane or natural gas with oxygen; if you have natural gas plumbed, see propane vs natural gas for torchwork before choosing regulators. And boro’s higher temperatures raise the safety stakes: flashback arrestors on both lines, boro-appropriate eyewear (ask your supplier what’s right for the boro work you do), and strong ventilation are non-negotiable. The full checklist is in the glass torch safety setup guide.

Key takeaways

• Boro needs more than soft glass: higher working temperatures mean an oxygen/fuel flame with real output — and a torch sized to your work, not just your budget.
• Entry boro: GTT Bobcat (~$275) — genuine boro capability on a 5–8 LPM concentrator.
• Detail boro: GTT Lynx (~$525) — the pinpoint precision pick.
• Step-up: GTT Cheetah ($645) for single-stage heat; Nortel Red Max ($712) for two-head versatility.
• Large work: GTT Mirage ($1,975) or Bethlehem Champion ($1,825) — plan tanked oxygen at this scale.
• Buy the oxygen and the torch as one decision. A modest torch fully fed beats a big torch starved for oxygen.

Sources

• Mountain Glass, “Best Torches for Lampworking or Glassblowing” — https://www.mountainglass.com/best-torches-for-lampworking-or-glassblowing
• Wikipedia, “Lampworking” — https://en.wikipedia.org/wiki/Lampworking
• Delphi Glass, “Flameworking With Borosilicate” — https://www.delphiglass.com/page/knowledgeBaseView?KBItemID=106
• GTT, “Cheetah” — https://www.glasstorchtech.com/cheetah
• GTT, “Mirage” — https://www.glasstorchtech.com/mirage
• Nortel Manufacturing, “Torches” — https://www.nortelglass.com/torches/
• Bethlehem Burners, “Champion” — https://www.bethlehemburners.com/torches/champion/
• Bethlehem Burners, “Torch & Burner Technical Information” — https://www.bethlehemburners.com/resources/technical-information/

Editor’s note: model names, behaviors, and prices reflect public manufacturer/dealer info and community sources as of 2026; verify current lineups, specs, and prices with the maker or a trusted dealer before purchase.