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Repair guides, support, and troubleshooting information for the first 13-inch MacBook Air to feature Apple's Arm-based M1 SoC (with an 8-core CPU and up to an 8-core GPU). Released in November 2020 and identified by model numbers A2337 or EMC 3598.

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What is the material on the inside of the bottom chassis?

Whatever the black heat-insulating material is that is stuck to the inside of the MacBook bottom case, it’s very effective at blocking heat transfer and is also very thin. Any idea what it is? I’d like to use something like it for a mod project I’m working on.

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1 Answer

Its likely Polyethylene

It is used mostly to protect the metal case from shorting across parts on the logic board if the case is crushed into it.

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