What is the proper lighting device for an oxy-acy torch?

The proper lighting device for an oxy-acetylene torch is a flint-operated sparking device. This type of ignitor delivers a small, concentrated spark that is sufficient to ignite the acetylene gas being released during the torch operation. The flint device is designed to create a reliable and consistent spark, which is necessary for safety and functionality when igniting the flame.

Using a battery-operated lighter or an electric ignitor may not provide the focused spark that flint does, and they could potentially pose a hazard in the presence of flammable gases. On the other hand, matchsticks are generally not suitable because they can be difficult to use in controlled and precise ignition situations like those required with oxy-acetylene torches. Therefore, a flint-operated sparking device is the safest and most effective choice for lighting an oxy-acetylene torch.