A safe oxy-acetylene cutting setup needs two secured cylinders, matched regulators, a twin hose, a correct tip, and a disciplined lighting sequence.
The riskiest part of oxy-acetylene cutting happens before the flame is ever lit, which is why the setup order is non-negotiable. Learning how to set up an oxy acetylene torch for cutting comes down to one disciplined sequence: secure the cylinders, fit the regulators and hoses, purge and leak-check everything, then light. The steps below follow standard shop practice and ESAB’s acetylene system checklist, and they end with the one pressure limit you should never cross.
What Do You Need Before Lighting the Torch?
Every oxy-acetylene cutting rig is the same five pieces working together, and each one has a compatibility check before you start.
- Two secured cylinders. Oxygen and acetylene, chained or clamped upright so they can’t tip over.
- Matched regulators. One regulator per gas, each rated for its service. An acetylene regulator should show a tank-pressure scale reaching about 400 psi. Fuel-side fittings use left-hand threads and tighten counterclockwise; oxygen fittings tighten clockwise. Never force a connection.
- A twin hose. ESAB specifies Grade T, R, or RM hose, green line to oxygen and red line to acetylene.
- A cutting torch handle with cutting attachment. Fit it with a cutting tip rated for acetylene gas — ESAB’s sample designation is 1-1-101. A tip meant for another fuel gas is not interchangeable.
- Personal protection. Welding goggles with a proper shade lens, flame-resistant gloves and clothing, and ear protection.
If you’re assembling a kit from scratch, see our tested roundup of acetylene cutting torch kits before you buy.
The Oxy-Acetylene Setup Sequence, Step by Step
This order is the whole game. It matches ESAB’s acetylene system setup checklist, and it keeps the rig safe at every stage.
- Chain both cylinders upright, remove the valve caps, and confirm the torch valves and cylinder