Defending Your Castle: Build Catapults, Crossbows, Moats, - download pdf or read online

February 27, 2018 | Science | By admin | 0 Comments

By William Gurstelle

ISBN-10: 1613746830

ISBN-13: 9781613746837

A man's house is his citadel, or so the announcing is going, yet may well it face up to an assault by way of Attila and the Huns, Ragnar and the Vikings, Alexander and the Greeks, Genghis Khan and the Mongols, or Tamerlane and the Tartars? Backyard Ballistics author William Gurstelle poses this attention-grabbing query to modern day storage warriors and exhibits them how one can construct an arsenal of historical artillery and fortifications aimed toward withstanding those invading hordes. each one bankruptcy introduces a brand new undesirable actor within the historical past of war, info his conquests, and contours guns and fortifications to guard opposed to him and his minions.

Clear step by step directions, diagrams, and pictures convey tips on how to construct a dozen tasks, together with "Da Vinci's Catapult," "Carpini's Crossbow," a "Crusader-Proof Moat," "Alexander's Tortoise," and the "Cheval-de-frise." With a robust emphasis on defense, the e-book additionally offers pointers on troubleshooting, explains the physics in the back of the various initiatives, and exhibits the place to shop for the fabrics. by the point they've reached the final web page, at-home defenders all over the place can have succeeded in making a totally fortified domestic.

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Extra info for Defending Your Castle: Build Catapults, Crossbows, Moats, Bulletproof Shields, and More Defensive Devices to Fend Off the Invading Hordes

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In one to two minutes, the mixture will soften and then melt into something that looks like runny peanut butter. When that happens, it’s ready to be shaped or poured into a mold. 19 Smoke Bomb Mixture 4. Turn off the heat (if the mixture overheats, it can ignite). Carefully place the hot, viscous mixture onto the waxed paper. Use a spoon to shape it into a rough triangular mound. Alternatively, you can pour it into a heatproof candy mold. 5. Cut a 2- to 3-inch length of fuse, which should be sufficient to provide approximately four to six seconds of burn time.

Insert the #8 machine screw through the hole with the screw head on the inside of the cap. Using threadlocker, fasten it securely with nuts and washers. Use PVC primer and cement to attach the cap to the end of the Lever Arm. 7. Fasten 2 screw eyes to the top of the end piece closest to the Stop. Each screw eye should be 3½ inches from the corner of the box. 8. 5. This is the trigger screw eye for step 10. 9. Connect the hooks on the bungee cord ends to the eye bolt on the Lever Arm, through the corresponding holes on the stop, and hook the remaining end through the screw eyes on the end.

It also requires that you build the frame very solidly. This model can be easily scaled up or down to suit nearly any defensive or offensive job, from a science fair project to turning back attacking Mongol hordes. A bit ironically, the Crouching Tiger was originally a Mongol design. The rotating throwing arm was powered by a falling weight, and it was so effective that it was adopted by many Chinese and Korean military engineers. Over time, they modified it to make it shoot farther and better, just as we are doing.

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Defending Your Castle: Build Catapults, Crossbows, Moats, Bulletproof Shields, and More Defensive Devices to Fend Off the Invading Hordes by William Gurstelle

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