historical-nonfiction:

In the late 18th century, a religious sect known as the Shakers emerged. Shakers valued living communally (albeit celibately), with equality between the sexes and hard work. Tabitha Babbitt lived in a Shaker community in Massachusetts and worked as a weaver. In 1810, she observed men cutting wood with a pit saw, which is a two-handled saw that requires two men to pull it back and forth. Though the saw is pulled both ways, it only cuts wood when it’s pulled forward; the return stroke is useless. To Babbitt, that was wasted energy, so she created a prototype of the circular saw that would go on to be used in saw mills. She attached a circular blade to her spinning wheel so that every movement of the saw produced results. Because of Shaker precepts, Babbitt didn’t apply for a patent for the circular saw she created.

thelilnan:

stickittothemandria:

dampsandwich:

why would you even drop acid? people are gonna slip on it and hurt themselves!

only drop the acid if you can neutralize it by dropping the base

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