Nortel Unitorch-12: the twelve-tip premix hand torch for scientific and lathe work
Nortel Unitorch-12 · Hand torch · Premix
The Nortel Unitorch-12 is a premix hand torch with twelve stainless-steel tips, built for scientific glassblowing: lathe work, seals, and flame cutting. Nortel says the Unitorch hand torches easily work 40 mm quartz or 75 mm borosilicate standard-wall tubing.
Specs
- Mix type
- Premix
- Mount
- Hand
- Oxygen (estimate)
- n/a
- Fuel
- Propane, Natural gas
- Skill level
- Intermediate, Advanced
- Glass
- Boro, Quartz
- Best for
- Lathe work, Scientific seals, Quartz, Flame cutting
- Price
- Mid ($$)
Manufacturer page
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 Nortel Unitorch-12 is a premix hand torch with twelve stainless-steel tips, part of Nortel’s Unitorch family and aimed squarely at scientific glassblowing: Nortel lists the Unitorch hand torches for lathe work, dewars, fritted discs, round bottoms, ring seals, graded seals, glass-to-metal seals, and flame cutting, and says they easily work 40 mm quartz or 75 mm borosilicate standard-wall tubing.
What the Unitorch-12 is
It is a premix torch: fuel and oxygen are mixed inside the body before reaching the flame, which makes the flame simple to light, stable, and predictable, exactly what long seal-making sessions on a lathe demand. The tips are the heart of the design, since flame size and character come from the installed tip rather than a fixed port array. For the mixing background see surface mix vs premix torches; on format see bench vs hand torch.
Construction
Nortel specifies a stainless-steel manifold and nozzle tubes carrying the twelve stainless-steel tips, and puts the torch at about 2 lb. For a hand tool that gets held through long lathe sessions, that weight matters as much as the flame does.
Who the Unitorch-12 is for
This is a specialist tool. If you are doing scientific or lathe work, sealing, or flame cutting on quartz and boro tubing, it belongs in the conversation alongside the six-tip Unitorch. If you are buying a first torch for beads or general studio work, it is the wrong shape of tool entirely, and the best beginner glass torch guide is a better starting point.
What we do not know
Nortel does not publish an oxygen flow figure or a price for this model on the page we work from, and flame size varies by installed tip, so we record neither. Confirm the current configuration, tip set, and price with Nortel or an authorized supplier before buying.
Best for: Scientific glassblowers and lathe workers who want more tips than the six-tip Unitorch offers for seals, dewars, and quartz or boro tubing work.
Not for: Beginners looking for a first soft-glass torch, or anyone needing a mounted bench flame, this is a specialist scientific hand tool.
Pros
- + Twelve stainless-steel tips on a stainless manifold and nozzle tubes
- + Light for its capability at about 2 lb
- + Premix flame: simple to light, stable, and predictable
- + Nortel says the Unitorch hand torches easily work 40 mm quartz or 75 mm borosilicate standard-wall tubing
Cons
- − A specialist scientific tool, not a general studio or beginner torch
- − Hand-held only; not a bench production tool
- − Flame size and oxygen use vary by installed tip, so no single LPM figure applies
- − No published price on Nortel's page, so budget with a quote
Flame notes
Premix hand torch with a stainless-steel manifold and nozzle tubes carrying twelve stainless-steel tips, about 2 lb. Nortel lists the Unitorch hand torches for lathe work, dewars, fritted discs, round bottoms, ring seals, graded seals, glass-to-metal seals, and flame cutting, working 40 mm quartz or 75 mm borosilicate standard-wall tubing.
Maker
Nortel Manufacturing
Canada · Founded 1967
Focus: Soft, Boro, Beginner
Toronto manufacturer founded by Peter Norton. The current mounted line is surface mix; selected hand torches and optional top burners are premix.
Related reading
FAQ
- What is the Nortel Unitorch-12?
- It's the twelve-tip member of Nortel's Unitorch family of premix hand torches for scientific glassblowing. Nortel lists the Unitorch hand torches for lathe work, dewars, fritted discs, round bottoms, ring seals, graded seals, glass-to-metal seals, and flame cutting.
- How does it differ from the six-tip Unitorch?
- Tip count. The Unitorch family shares a premix design and the same stated capability of 40 mm quartz or 75 mm borosilicate standard-wall tubing; the twelve-tip version puts more tips on the manifold. The twelve-tip version is the largest of the family.
- Is the Unitorch-12 surface-mix or premix?
- Premix: fuel and oxygen are mixed inside the torch before reaching the flame. Premix burners are simple to light, stable, and predictable, which is why the style dominates scientific hand torching.
- Is the Unitorch-12 a good beginner torch?
- No. It's a scientific and lathe-work tool for intermediate-to-advanced users. A beginner working soft glass at a bench is far better served by a bench burner; see our best beginner glass torch guide.