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May one prepare coffee ingredients in a brewer such as this one on Friday and set the timer to brew the coffee for 8:00 Shabbos morning?

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In a footnote in this document it states,

Iggerot Moshe, Orach Chaim 4:60. Rabbi Feinstein writes that use of timers to automatically regulate machines to perform work forbidden to Jews on Shabbat is generally forbidden, with the exception of turning lights on and off. He believes that use of timers would severely disrupt the Shabbat atmosphere, since all of one's work could be performed by machines. Rabbi Feinstein asserts that just as the Sages did not want, and therefore forbade, our asking non-Jews to perform work on our behalf on Shabbat for fear that this would disrupt the Shabbat atmosphere (see Rambam Hilchot Shabbat 6:1), so too the Sages would not want machines to do work on our behalf during Shabbat. Rabbi Feinstein appears to be the lone authority to adopt this approach.

It seems that if you want to follow Rabbi Feinstein then you should not set the timer to brew the coffee for 8:00 Shabbos morning.

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If you want to follow him, yes, but what about everyone else? There may be something about the case of a drip machine that is stricter than the most general case of "machines doing work". (There may not.) +1, though, it does answer the question according to RMF, and he was, after all, RMF. –  msh210 Oct 30 '13 at 20:45
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Per the OU it seems that it may be permitted in certain instances.

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I seem to remember that Rabbi Moshe Feinstein was not in favour of using timeswitches other than for lighting and heating (no source available). –  Avrohom Yitzchok Oct 30 '13 at 17:26
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