Fan vibrates real bad. Needs a new blade. 18 inch floor fan. Blade is weak and bends easily.
Stick a small weight to the end of one of the fan blades with some sellotape , run the fan , if the noise gets worse transfer the weight to another blade.
When the fan is running quietly go to the blade opposite to the one with the weight on and drill out a 10mm hole in the material.
Take the weight off and check for balance if it is still out drill another smaller hole in the blade till you get a balance
Drill the holes a the tip of the blade so that you get the best effect from the removal of material
This will save you buying a new blade
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