Lnrueg Mini Oxygen Acetylene Torch Kit, Handheld Oxygen Welding Torch, Portable Propane Soldering Torch with 5 Tips, Jewelry Repair Torch, 3092°F (1700°C) Welding Tool for Crafts, Electronics

Why I picked up this mini oxy-fuel torch

I wanted a compact, precise flame for small brazing and silver soldering jobs without hauling out a full-size torch. The Lnrueg mini oxy-fuel torch promises a slim body, five tiny screw-on tips, and enough heat (rated up to 1700°C/3092°F) for jewelry, electronics, and light metal work. Over several weeks, I used it at the bench and on a couple of field tasks, feeding it oxygen and propane from standard cylinders. Here’s how it fared.

What’s in the box

• Handheld metal torch body with knurled, non-slip grip
• Two braided hoses (about 5.9 ft each), color-coded
• Five interchangeable tips ranging from needle-fine to a larger brazing size

Not included: regulators, cylinders, check valves/flashback arrestors, tip cleaners, or ignition source. This is important—plan for the missing items before you expect to work.

Setup and compatibility

Right out of the box, the torch body feels solid and the tips thread snugly. The braided hoses are compact and reasonably flexible, well-suited to bench use. However, they are not fitted with standard full-size torch ends. If you’re running conventional B-size (9/16-18) regulators and hose hardware, expect to use adapters or couplers to interface the included mini hoses. That’s typical for torches in this class, but it’s not well explained by many budget kits.

A few setup notes from my experience:
- Confirm which hose is oxygen and which is fuel based on the torch’s markings, not just color. The color scheme doesn’t always align with North American conventions.
- Install check valves or flashback arrestors at the torch or regulator ends. This kit doesn’t include them.
- Leak-test with soapy water before lighting.
- Start with low regulator pressures suited to the smallest tip, then work upward as needed for larger tips.

Once configured, lighting was uneventful with a flint striker: crack fuel, light, then introduce oxygen and trim to a neutral flame.

Ergonomics and controls

The body is small and well-balanced, closer to a pen torch than a typical handle. The textured grip stays secure even with gloved hands. The two needle valves provide decent control over gas flow. On my unit, adjustments were predictable—with a couple of caveats:

• The valves are sensitive. A tiny movement can swing the flame lean or rich, especially on the smallest tips.
• Over a long heat, I occasionally saw minor drift, requiring a quick trim of the oxygen valve. This isn’t unusual at this price point, but if you’re expecting lab-grade needles that never move, temper expectations.

Valve feel aside, positioning the torch in tight spots is easy. The short body and slim tips make it excellent for precise work on jewelry settings, small brackets, and electronics.

Flame and performance

Running oxy-propane, the largest tip produced a steady, slightly noisy flame with enough heat for small brazes and silver soldering on copper and steel. The smaller tips gave me pinpoint control for local heating, tacking, and solder flow on delicate parts.

What it handled well:
- Silver soldering sterling rings and jump rings
- Brazing small copper lines and fittings (I successfully flowed hard solder on 1/4-inch copper with the largest tip)
- Rejoining a carbon steel bandsaw blade with a silver braze and post-solder tempering
- Heat-shrinking, de-soldering larger electronics terminals, and freeing stuck fasteners

What it doesn’t replace:
- A full-size oxy-acetylene torch for thick steel. The BTU output from a micro tip is limited, and even with the largest tip you don’t get the volume needed for heavy sections or wide-area heating.
- A production glass lampworking burner. You can soften and form small soda-lime pieces and do tiny repairs, but larger borosilicate work needs more flame size and oxygen flow.

With the right tip and pressures, I could tune a clean, neutral flame that didn’t sputter or pop. The smallest tips are prone to clogging if you pick up flux or scale; keep them clean and purge after use. I recommend having a micro tip cleaner set handy.

Tips and task sizing

The five included tips are the heart of the kit’s versatility. Roughly categorized:
- Needle tips: micro soldering, prongs, tiny jump rings, localized heat on sensitive assemblies
- Mid tips: small brackets, electronics lugs, light brazing on thin-wall tubing
- Largest tip: small HVAC repairs, modest copper brazes, heating for bending light wire or strip

Changing tips is quick. Thread engagement is adequate, but take care not to cross-thread; the brass is soft and wants a gentle hand. I found best results by setting regulator pressures to match the tip size—too much pressure on a small orifice is a recipe for an unstable flame.

Build quality

The metal body and tips feel robust for the price. The knurling is clean, the valve knobs have enough grip, and the hose jackets are tightly woven. Over a couple weeks of use, I didn’t notice play developing in the valves, though again, the adjustment is sensitive. The hoses are short compared to shop hoses, which is great at the bench but slightly limiting in the field; they’ll reach around a vise or small work table without tangling.

Thread machining on the tips is fair-to-good—I had one tip that started rough but seated once the threads were cleaned. Keep a small brush handy or blow the threads out before first use.

Safety notes

• Add check valves or flashback arrestors; these are non-negotiable with oxy-fuel.
• Confirm hose-to-regulator compatibility and use the correct adapters. Do not force mismatched threads.
• Keep pressures appropriate for the tip to avoid backfires.
• Purge lines before lighting and after shutdown, and cap hoses when storing to keep debris out of the tips.

Limitations

• Not plug-and-play. You’ll almost certainly need adapters to marry these mini hoses to standard regulators, and you must supply all gas-side safety hardware.
• Valve precision is good but not premium. Expect occasional micro-adjustments during longer heats.
• Heat output is necessarily limited by tip size. Great for small work; not intended for heavy fabrication or thick sections.

Who it’s for

• Jewelers and makers who need a controllable, pinpoint flame for silver soldering and small brazes
• Electronics repair and prototyping where localized heat minimizes collateral damage
• Light metalwork, instrument repair, and blade or band repairs with silver brazing
• HVAC techs needing a compact backup for tight spots on small lines (with the largest tip)

If your work skews toward thick steel, large copper manifolds, or continuous duty, look to a larger torch system.

Alternatives to consider

• Smith Little Torch or Hoke-style torches offer similar form factors with more established parts ecosystems. They cost more, but accessories and spares are easier to source.
• A small air-fuel torch (propane/MAP-Pro) is simpler to set up and cheaper to run, but you sacrifice flame precision and maximum temperature.

Bottom line

As a compact oxy-fuel tool, this mini torch delivers the essentials: a stable, adjustable flame, a useful spread of tip sizes, and a comfortable, maneuverable body. It’s at its best on jewelry, electronics, and light brazing where control matters more than raw output. Setup isn’t foolproof—plan for adapters and safety hardware—and the valves, while workable, sit a tier below premium torches in feel and stability. But once configured, it does the job reliably and without fuss.

Recommendation: I recommend this torch for users who already own regulators, understand oxy-fuel safety, and need a budget-friendly, precise flame for small metalwork. If you want a turnkey system, or you require rock-steady needle valves and off-the-shelf hose compatibility, spend more on a higher-end micro torch. For everyone else, this little unit earns a spot on the bench.