Dillon vs ordinary oxyacetylene — what sets them apart
Both are gas welding with oxygen and acetylene. But that's where the similarity ends. Dillon runs 0.5 bar on both gases, ordinary oxyacetylene runs higher pressure. The difference is enormous: softer flame, better control, soft seams you can work, and cheaper operation.
See also: Gas welding with Dillon – the basicslow-pressure gas welding at 0.5 bar
Both kits weld, braze, heat and cut up to 25 mm steel. The Standard Kit suffices for hobby and car restoration – the Pro Kit gives 8 welding nozzles and extensions.
What ordinary high-pressure gas welding gets wrong
Conventional oxyacetylene runs higher pressure and produces a turbulent flame that scatters heat in all directions. Thin sheet deforms, sensitive materials burn through, and the joint becomes hard and brittle. Precision work becomes a challenge.
Dillon's 0.5 bar flame — why it works better
Dillon's unique mixing chamber blends oxygen and acetylene at exactly the same low pressure — 0.5 bar. The gases flow laminarly, the flame stays soft and concentrated, and the heat stays where you point. The result: precision, control, and soft seams you can work.
Concrete comparison: Dillon vs ordinary gas welding
| Dillon | Ordinary gas welding | Advantage |
|---|---|---|
| 0.5 bar on both gases | Higher pressure, varying depending on tip | Dillon |
| Soft, concentrated flame without turbulence | Turbulent flame that scatters heat | Dillon |
| Soft, workable seams | Hard, brittle seams | Dillon |
| Sheet doesn't warp, stress-free joint | Risk of deformation in thin sheet | Dillon |
| Cheaper operation, longer bottle life | Higher gas consumption | Dillon |
| Runs without electricity, fully portable | Runs without electricity, fully portable | Equal |
When Dillon beats ordinary gas welding
Thin sheet
Weld 0.8–1 mm sheet without deformation or burn-through.
Workable seams
Hammer, file and planish the joint — impossible with ordinary gas welding.
Sensitive materials
Aluminium and cast iron demand soft controlled heat — Dillon delivers.
Switching from ordinary gas welding to Dillon
1. Keep your cylinders
Dillon uses oxygen and acetylene in ordinary cylinders – small ones are enough.
2. Check regulators and hose
The regulators must work in the 0–1 bar range. You need a low-pressure twin hose, and existing gear usually fits.
3. Set 0.5 bar on both gases
Light up and adjust to a neutral flame – blue core with no yellow tip.
4. Weld with smooth movements
Heat until a weld pool forms, feed the filler rod in front of the flame and move forward in an even arc or zigzag.
Jobs where the difference shows
Bodywork and thin sheet
Weld 0.8–1 mm sheet without warping or burning through.
Seams you need to work
Soft seams you can hammer, file and planish just like the original sheet.
Aluminium and cast iron
They demand soft, controlled heat – with rod and flux.
Cutting with the same torch
The copper cutting nozzle and cutting carriage give straight cuts in steel up to 25 mm.
Read more about gas welding
The gas welding guide covers the basics, step by step, and what Dillon can be used for.
Read the gas welding guideFAQ: Dillon or ordinary gas welding
What is the difference between Dillon and ordinary oxyacetylene?
Both use oxygen and acetylene. Dillon runs at 0.5 bar on both gases, while ordinary gas welding runs at higher pressure. That gives Dillon a softer flame, better control and soft seams you can work.
Can I use my gas cylinders?
Yes. Dillon uses oxygen and acetylene in ordinary cylinders, and small ones are enough.
Do my regulators and hoses work?
If you already have gas welding equipment, your cylinders, regulators and hoses fit directly. The regulators must work in the 0–1 bar range.
Are the seams really softer?
Yes. The soft flame gives stress-free seams you can hammer, file and planish – even in 0.8 mm sheet.
Can Dillon cut?
Yes. Both kits include a copper cutting nozzle and a cutting carriage for straight cuts in steel up to 25 mm.
Does Dillon use less gas?
Yes. Efficient combustion means the torch uses considerably less gas, and the bottles last noticeably longer.
What is Dillon MK III?
Dillon MK III is the torch’s original name. Today Dillon is sold as the Standard Kit and the Pro Kit. If you search for Dillon MK III or MK3, it is the same torch.
Buy Dillon Standard or Pro Kit
Standard suffices for hobby and car restoration. Pro gives 8 welding nozzles, extensions and acetylene/air nozzle for professional work.
Learn more
Related guides
Gas welding with Dillon
Soft seams, runs without electricity, reaches materials MIG can't.
Standard or Pro?
Compare the kits and see which fits your needs.
Repair cast iron
Structural repairs with soft 0.5 bar flame and control.
Weld aluminum
Full penetration in 1 mm sheet without burning through.
Why 0.5 bar?
Soft concentrated flame without turbulence — why Dillon is different.
The starter guide
Free guide to gases, pressure and your first seam.