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Line up one corner of the thermal pad with one corner of the heatsink and remove the other plastic sheet from
the thermal pad.
The pad is 8” X 8” and the heatsink is only 4.6” X 6” so you will have some leftover thermal
pad, save it, it may be useful in other projects.
Using a utility knife, trim the edges thermal pad to match the heatsink.
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Step 23: Threaded Rods
– In each of the four corners of the heatsink insert the #4-40 x ½” threaded rod
through the thermal pad into the heatsink. Lift the corner of the heatsink and apply thread locker if desired.
Thread the rod into the heatsink until the end of the rod comes through the base of the heatsink.