eli5: Why do cheap lighters have a divide in their fuel reserve?

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I recently got a science teaching job and had to buy a cheap see-through lighter to ignite the Bunsens, I don’t understand why the tank has to have two different compartments on the inside. You can tilt it and fill up one or the other, could someone explain why this is necessary instead of one big tank?

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18 Answers

Anonymous 0 Comments

Other folks have already answered the main question. A correlary might be: Why is the gap between the two halves at the top rather than at the bottom where it would be able to flow on its own? The answer to that question is because they are injection molded, and a gap at the bottom would make the part stick in the mold

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