When cutting, an oxyacetylene torch is inclined more for thin material.

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When cutting with an oxyacetylene torch, heat control and how the flame is delivered to the cut line are key. Tilt the torch more toward the surface for thin material so the heat is concentrated along a narrow path and the molten metal is blown away quickly by the oxygen jet. This quick, focused heating minimizes the amount of heat entering the surrounding material, reducing the risk of warping or burning through a thin sheet. If the torch is held more upright, the preheat zone becomes longer and heat spreads more, increasing the chance of overheating the thin piece. If it’s too horizontal, heat is not as effectively directed along the cut line, which can widen the kerf or produce a rough edge.