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Originally Posted by pressld2  They don't work with dimmer switches, they don't work with timer switches (so my external security lights can't use them), they are dangerous to use with power tools because they flicker and can make a moving saw blade or drill bit look stationary and, above all, they are still too big! |
They're also no good in ovens, or micro waves. Cold temperatures reduce the bulbs' efficiency and make them dim excessively. They use more energy to produce and they contain mercury and phosphorus and at present there is not much in the way of recycling facilities for these.