It's called a lightning bolt, but it took centuries. For generations, carpenters worked to solve the problem of the timber scarf—how to connect the ends of two timbers into a single long beam with a joint that will resist tension, compression, bending, and twisting. By the mid-thirteenth century, English carpenters almost had it, a lightning-bolt-shaped scarf with the ends undercut to interlock under pressure from the central transverse wedge. Through the rest of the century, they found ways to make it even stronger, but the improvements were marginal compared to the added cost. They had found the optimal solution—but did not know it at the time.
Thus flows the arc of all endeavor. Once solved, a problem is gradually forgotten, and with it goes the thinking that went into the solution. Further generations of carpenters knew how to make a scarf joint, but with the problem solved, they began to forget why. They kept tinkering, simplifying this element, elaborating that element, and producing scarf joints that were often inferior to their grandfathers. Only when the "improved" joints failed, while the old ones stood firm, did carpenters suspect that they had passed through one small apogee of their art.
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There are a lot of things that either needs to be repaired, or put together when youre a homeowner. If youre a new homeowner, and have just gotten out of apartment style living, you might want to take this list with you to the hardware store. From remolding jobs to putting together furniture you can use these 5 power tools to get your stuff together. Dont forget too that youll need a few extra tools for other jobs around the house.