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.

Show description

Read Online or Download Defending Your Castle: Build Catapults, Crossbows, Moats, Bulletproof Shields, and More Defensive Devices to Fend Off the Invading Hordes PDF

Similar science books

The Obesity Paradox: When Thinner Means Sicker and Heavier - download pdf or read online

Such a lot folks imagine that durability hinges on keeping a standard physique Mass Index. yet learn performed over the past decade hit the media in January with explosive information: obese or even reasonably overweight individuals with convinced persistent diseases—from middle illness to cancer— usually reside longer and fare higher than normalweight people with a similar diseases.

New PDF release: The Skeptic's Dictionary: A Collection of Strange Beliefs,

A wealth of facts for doubters and disbelievers
"Whether it's the newest shark cartilage rip-off, or a few new 'repressed memory' idiocy that besets you, I recommend you hold a replica of this dictionary always, or not less than have it within sight as first relief for psychic assaults. we'd like all of the support we will get. "
-James Randi, President, James Randi academic origin, randi. org
"From substitute medication, extraterrestrial beings, and psychics to the farthest seashores of technological know-how and past, Robert Carroll offers a desirable examine a few of humanity's so much unusual and lovely rules. clean and witty, either believers and unbelievers will locate this compendium entire and alluring. purchase this ebook and feed your head! "
-Clifford Pickover, writer of the celebrities of Heaven and Dreaming the longer term
"A fresh compendium of transparent considering, a welcome and effective antidote to the reams of books at the supernatural and pseudoscientific. "
-John Allen Paulos, writer of Innumeracy and A Mathematician Reads the Newspaper
"This ebook covers an awesome variety of subject matters and will defend many folks from being scammed. "
-Stephen Barrett, M. D. , quackwatch. org
Featuring as regards to four hundred definitions, arguments, and essays on subject matters starting from acupuncture to zombies, The Skeptic's Dictionary is a full of life, common sense trove of special details on all issues supernatural, occult, paranormal, and pseudoscientific. It covers such different types as substitute medication; cryptozoology; extraterrestrials and UFOs; frauds and hoaxes; junk technological know-how; common sense and notion; New Age power; and the psychic. For the open-minded seeker, the tender or hardened skeptic, and the believing doubter, this ebook bargains a awesome variety of knowledge that places to the attempt the easiest arguments of precise believers.

Download PDF by : Scientific American

New; particularly excellent. See description and scans. long island: medical American, a department of Nature the US, Inc. , 2016. The April, 2016 factor of medical American, quantity 314, quantity four. 4to, perfect-bound illustrated wraps, eighty two pp. New; thoroughly pristine and immaculate, and with the laid-in cardstock subscription deals, all these untouched, after all.

Get Engineering Design 3 Checkbook PDF

Engineering layout three: Checkbook covers layout descriptions and difficulties interested by the car undefined. The e-book starts off by means of discussing the most components that impact the alternative of fabrics, resembling mechanical and actual houses, production tactics, anti-corrosive houses, and availability at least expensive.

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

Sample text

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.

Download PDF sample

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


by Jason
4.5

Rated 4.93 of 5 – based on 37 votes