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Metal drinking cup is stuck inside a pressure cooker
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[QUOTE="Baluncore, post: 6855343, member: 447632"] 1. The aluminium pressure cooker has a higher thermal expansion coefficient, so when heated, it will expand more than a steel cup. Remove the handles from the pressure cooker, so they are not damaged by heat. Place the pressure cooker without its lid, upside-down in an oven. Turn on the oven and listen for when the cup falls. 2. Alternatively, place a loop of wire around the base of the cup, also rotate a hook into its opening. When you pull equally on those two, the opening of the cup will become more elliptical, so the cup will become narrower, and release. Without the base loop, the cup might rotate and jam in tighter. 3. Combine the two, heat and tension. [/QUOTE]
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Metal drinking cup is stuck inside a pressure cooker
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