Things You Will Need
The tip of the can of butane fits into a specially designed hole on a refillable lighter. Knowing whether or not your lighter is butane refillable is a simple matter examining the lighter.
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Hold the lighter and turn it upside down. Look for a small hole near the center bottom of the lighter.
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Point the hole away from your face and insert a small jeweler's Phillips-head screwdriver or a small brad nail into the hole and press inward slightly. A refill hole allows air and butane to bleed out when depressing the hole.
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Find a small hole along the handle of larger lighters such as fireplace lighters. Perform the same bleeding test to the hole as you would for a smaller lighter.