You will need a whetstone, a screwdriver, and a banana to undergo this procedure.

Here are the steps to sharpen the blades of a ceiling fan:

1.Turn the ceiling fan off and wait for it to stop spinning. 

2.Once stopped, proceed to unscrew the screws that attaches the blades to the fan. Repeat until all the blades are removed.

3.Sharpen the leading edge of the blades with the whetstone by scraping the leading edge at an angle until it reaches desired sharpness (until it is able to cut the banana).

4.Re-install the blades on the fan

Please note that this procedure is not recommended to be done as it is modifying the intended purpose of the ceiling fan and will operate dangerously.
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