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 LAPPING Definition
We define LAPPING |
LAPPING - The practice of sanding down the surface of a microprocessor package to make it flatter than it was initially in order to make better contact with a heatsink. You do not sand down the microprocessor itself, but the metal surface on the top of the microprocessor that comes into contact with a heatsink. Typically you start with a rougher (but still fine) grit of sandpaper and lightly sand the surface flat, moving to finer and finer sandpaper until the metal has a mirror shine. Uneven chip package surfaces make the microprocessor contact the heatsink poorly. Lapping can be dangerous, especially with newer processors that are smaller than their older counterparts and have less metal on top of them. If you sand through the metal you will ruin the processor. |
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