Hot Head vs Nortel Minor: Should You Upgrade to an Oxygen Torch?

Short answer: If you have outgrown your Hot Head and want bigger beads, tighter flame control, oxygen-rich color striking, or any borosilicate work, the Nortel Minor is one of the classic first oxygen torches to jump to, and at about $224 the torch itself is the cheap part. The real decision is not Hot Head versus Minor: it is whether you are ready to add an oxygen supply, regulators, hoses, and the right flashback protection, because that whole system is what a Minor needs and a Hot Head deliberately avoids. If you only make small soft-glass beads now and again and do not care about boro, staying on the Hot Head is a perfectly honest choice.

If you are still deciding whether to leave the canister world at all, start with the Hot Head torch guide, which covers the canister setup on its own terms.

What the Hot Head actually is

The Hot Head is a single-fuel canister torch. It screws onto a disposable propane or MAPP cylinder and burns that fuel with the surrounding air. There is no oxygen line, no compressed air, no regulator to dial in: you open the valve, light it, and work. That simplicity is the entire point. It is inexpensive, it sets up on a kitchen table, and it is how a very large share of beadmakers made their first beads.

The trade-off is heat. Because it mixes fuel with ordinary air rather than pure oxygen, a Hot Head cannot produce an oxygen-rich flame. In practice that means three limits, all reported consistently by working lampworkers: it will not fully strike the oxygen-hungry colors (many silver and reactive glasses need a richer flame to develop), it cannot reach borosilicate working temperatures, and even on the soft glass it does handle (Moretti, Bullseye, and similar soda-lime), it melts more slowly than an oxy-fuel torch. None of that makes it a bad torch. It makes it a beginner and soft-glass torch, which is exactly what it was built to be.

The Hot Head is not in our catalog or the torch finder on purpose: it is a canister torch, a different class of tool from the bench torches we compare. Everything specific to running one lives in its own guide.

What the Nortel Minor is

The Nortel Minor is a surface-mix, oxy-propane bench torch. It bolts to your bench and runs fuel (propane, or natural gas) against bottled oxygen or an oxygen concentrator. Its front end is a 7-port stainless face, single stage, producing a flame that ranges from a fine pencil at about 1/8 inch up to a bushy working flame near 3/4 inch. That range suits beads, small sculpture, and marbles up to roughly 3 inches. Nortel’s own product page frames it as a reliable, near-indestructible workhorse, and it has earned that reputation as an entry-level and teaching-studio torch for decades.

Being surface mix, the Minor keeps fuel and oxygen separate until the gases meet at the face, which gives a calmer, more forgiving flame than a high-velocity premix torch. That is part of why it is a common first oxygen torch: it is gentle enough to learn on but capable of real work, including light boro once you have the oxygen to feed it.

Head to head: what you gain moving to a Minor

The jump from a Hot Head to a Minor is a jump in capability, bought with a jump in complexity.

What you actually feel at the bench: the flame gets hotter and adjustable, so you can push a larger or faster bead and dial a pinpoint flame for detail. You unlock color chemistry that a canister flame leaves flat, and you get a first door into boro. The cost is that you now own and maintain an oxygen system.

The catch: the Minor needs an oxygen setup

This is the part every upgrade guide should say plainly. The Minor is affordable; the oxygen it drinks is where the money and the decisions are. You have two ways to feed it.

Oxygen concentrators pull oxygen from room air and deliver a steady low-pressure stream. Nothing to refill, nothing to run out mid-session, and no heavy cylinders. The catch is volume: a concentrator’s output is capped. Bethlehem, which builds burners, notes that a concentrator is limited to roughly 4.5 to 5 LPM at maximum purity and around 7 to 9 PSI, and describes them as best for soft glass with small torches rather than big or boro work. A common community rule of thumb, corroborated across lampworking forums, is that a 7-port dual-fuel torch like the Minor runs on a single small concentrator around 5 LPM, and that torches with more ports need more (a 14-port head wanting roughly 8 to 10 LPM). We carry the Minor’s oxygen figure as an owner estimate of about 9 LPM at the max usable flame, not a Nortel-published spec, so treat it as a ballpark, not a target to hit exactly.

Oxygen tanks deliver higher volume and pressure than any concentrator, which is what you want for larger torches and boro. The trade-off is that cylinders are heavy, cost money to rent or own, and run out in the middle of a session at the worst possible time. For a Minor specifically, a tank is more than the torch strictly needs; many people run one happily on a single concentrator instead. The full comparison lives in oxygen concentrator vs tanks.

Editor’s note: concentrator LPM and pressure figures vary by unit and by source, and sources disagree on how much a small torch truly needs. Bethlehem cites about 4.5 to 5 LPM at max purity; community rules of thumb say a roughly 5 LPM concentrator will run a 7-port Minor. Confirm the requirement against Nortel’s manual and your own concentrator’s rating before you buy.

What the upgrade really costs

Beyond the roughly $224 torch, budget for these categories (we do not invent dollar totals, because they swing hard by region, new versus used, and concentrator versus tank):

• An oxygen source: a concentrator, or an oxygen tank plus rental. This is usually the single biggest line after the torch.
• An oxygen regulator: needed for a tanked oxygen supply to step high cylinder pressure down to working pressure. Low-pressure concentrators often need none.
• A propane source and fuel regulator: a refillable propane cylinder and the regulator to set fuel pressure.
• Hoses rated for the gases in use.
• The flashback protection your torch and gas supply call for, matched to your setup (more on this below).

For a fuller picture of where the dollars land across a first oxygen setup, see the beginner lampworking setup cost guide.

Setting it up safely

Two rules govern everything here. First, the manufacturer’s manual takes precedence over any number you read online, ours included. There is no single fixed regulator setting for the Minor: working pressures depend on your fuel, your oxygen source (concentrator or tank), and the flame you are after. Set your regulators from Nortel’s own manual for your configuration, then fine-tune to your gas supply and flame rather than copying a number off a forum.

Second, flashback protection is not one-size-fits-all. Flashback arrestors come in torch-mount and regulator-mount types, and both flow direction and gas-specific matching matter: installing one backward, or on the wrong line, can block flow entirely (a documented hazard in institutional hot-work safety guidance). There is no single blanket rule that fits every torch and gas supply, so do not copy someone else’s arrestor layout. Fit the flashback protection your torch and gas supply call for, and read flashback arrestors explained before you buy or install anything.

One more: use fittings and sealants rated for fuel gas and oxygen service, follow the manufacturer’s instructions for sealing joints, and leak-check every connection before you light up.

Is the Minor the right first oxygen torch for you?

Upgrade to the Minor if you want bigger or faster beads, adjustable and pinpoint flame control, the ability to strike reactive colors, or any borosilicate work, and you are ready to run an oxygen concentrator (or a tank). It is one of the most forgiving, most affordable, and most durable ways to enter oxy-fuel work.

Stay on the Hot Head if your work is small soft-glass beads, you value the near-zero setup, and you do not want to own an oxygen system yet. There is no shame in it, and the Hot Head remains the cheapest way to keep making glass.

Consider the half-step: the Nortel Mega Minor (about $268) is the Minor’s slightly larger sibling, running on similar oxygen. Community reports put a 10 LPM concentrator plus a Mega Minor at comfortably handling beads around 1 inch and smaller. If you already suspect you will want a bit more headroom soon, it is worth pricing alongside the Minor before you commit. For a wider look at first torches, see the best beginner glass torch guide.

Key takeaways

• The Hot Head is a canister torch with no oxygen: cheap, simple, soft-glass only, no boro, and it will not fully strike oxygen-hungry colors.
• The Nortel Minor (surface mix, oxy-propane, about $224) is a classic first oxygen torch: hotter, adjustable, color-capable, and light-boro capable.
• The torch is the cheap part. The upgrade’s real cost is the oxygen source, regulators, hoses, and flashback protection, stated here as categories because real dollars vary widely.
• A small ~5 LPM concentrator typically runs a 7-port Minor; sources disagree on the exact figure, so confirm against Nortel’s manual and your concentrator’s rating.
• Follow the manufacturer’s manual for pressures, fit the flashback protection your setup calls for, and use fittings and sealants rated for fuel gas and oxygen service.

Related guides

• Hot Head torch guide
• Oxygen concentrator vs tanks for lampworking
• Flashback arrestors explained
• Best beginner glass torch
• Beginner lampworking setup cost

Sources

• Nortel Glass, “Minor Bench Burner”: https://www.nortelglass.com/minor-bench-burner/
• Nortel Glass, “Mega Minor Burner”: https://www.nortelglass.com/mega-minor-burner/
• Bethlehem Burners, “Oxygen concentrator questions”: https://www.bethlehemburners.com/news/oxygen-concentrator-questions/
• ArsBrevis (D. Clarke), “OxyBoxen” (community artist resource): https://www.daclarke.org/ArsBrevis/oxyBoxen.html
• Lampwork Etc., concentrator sizing discussion (community knowledge): https://www.lampworketc.com/forums/showthread.php?t=183385
• Cornell EHS, “Flashback arrestor toolbox talk”: https://ehs.cornell.edu/campus-health-safety/fire-and-life-safety/hot-work-and-welding-safety/flashback-arrestor-toolbox-talk
• WetCanvas, Hot Head upgrade discussion (community knowledge): https://wetcanvas.com/forums/archive/index.php/t-266819.html

Editor’s note: model names, specs, and prices reflect public manufacturer and community sources as of 2026, and figures such as oxygen LPM are estimates that vary by source. Verify current lineups, pressures, and prices with the maker before purchase.