Gas welding with Dillon's 0.5 bar system
Gas welding gives soft, workable seams you can hammer, file and planish — no other welding process reaches the same result. Dillon is built for low-pressure welding: 0.5 bar produces a soft concentrated flame, runs entirely without electricity, and tackles materials that MIG and TIG can't.
Common gas welding jobs: cast iron repairweld aluminium with gaslow-pressure gas welding at 0.5 barStandard or Pro Kit
The Standard Kit includes the solid brass torch handle, 4 welding nozzles (sizes 0–3) and a copper cutting nozzle with cutting carriage. The Pro Kit adds 4 more nozzles and extensions.
Why ordinary high-pressure gas welding is difficult
Traditional oxy-acetylene runs higher pressure and produces a turbulent flame that scatters heat everywhere. This makes thin sheet difficult to weld without deformation, and precision work becomes risky.
Dillon's unique 0.5 bar system — why it works
Dillon's mixing chamber blends oxygen and acetylene at exactly the same low pressure — 0.5 bar on both gases. The result is a soft, laminar flame without turbulence: the heat stays where you point it, and the seam stays soft and stress-free.
What you can do with Dillon
Weld
Steel, stainless, aluminium and cast iron up to 8–10 mm.
Braze
Bronze and brass — including brass brazing onto cast iron.
Heat
Rusted nuts, bending and straightening without deforming what surrounds them.
Cut
Straight cuts in steel up to 25 mm with cutting attachment and guide.
See the result in the workshop
Advantages of Dillon's low-pressure gas welding
Runs without electricity
With the bottles you have a complete workshop — out in the yard or in a shed without 400 V.
Soft, workable seams
Unlike MIG you can hammer, file and planish Dillon's seams just like the original sheet.
Cheaper to run
Efficient combustion means the torch uses considerably less gas. The bottles last noticeably longer.
Gas welding FAQ
Which gases does Dillon need?
Acetylene and oxygen in ordinary cylinders. Dillon runs at 0.5 bar on both gases. You rent or buy the cylinders from a gas supplier.
Where do I buy acetylene and oxygen?
From gas suppliers and their dealers, who rent out and refill cylinders. Contact your nearest gas supplier for terms.
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.
What is included in the Standard Kit?
A solid brass torch handle, four welding nozzles (sizes 0, 1, 2, 3), a copper cutting nozzle and cutting carriage, check valves at the handle, tip cleaners, hose connections and a manual. Flashback arrestors at the regulators are not included. The Pro Kit has everything in the Standard Kit plus four extra welding nozzles, an acetylene/air nozzle and two extensions.
Does my existing gas welding equipment fit?
Yes. If you already have gas welding equipment, your cylinders, regulators and hoses fit Dillon directly. The regulators must work in the 0–1 bar range, since Dillon uses 0.5 bar on both gases.
Can I weld cast iron and aluminium with gas welding?
Yes. With Dillon you weld both cast iron and aluminium using filler rod and flux. The soft 0.5 bar flame makes the heat easier to control in cast iron and thin aluminium.
Can I return my order?
Yes, you have a 30-day return period.
Standard Kit or Pro Kit
Standard suffices for hobby and general craft. Pro gives 8 welding nozzles, extensions and acetylene/air nozzle for lead loading.
Learn more
Related guides
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.
Dillon vs ordinary gas welding
Softer flame, better control, workable seams.
The starter guide
Free guide to gases, pressure and your first seam.