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Contribution of woodworking
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Sawing
Have you ever walked out in your backyard and heard the faint buzz of a chain saw in the distance, or passed a truck caring a load of logs on the interstate? Chances are that you have considering that wood is most commonly used building material of today's society. But have you ever given any thought to how or where the ability to gather such a large quantity of wood originated? Would you believe me if I told you that it came form the jawbone of an animal?
Some four thousand years ago the interest in woodwork was increasing. This created the need for an effective way to quickly and smoothly cut a piece of wood. Around this time the discovery of copper allowed for the invention of a tool, the saw, that could fulfill this need. This saw was designed with a thin piece of copper stuck into a small piece of wood. The copper strip had teeth lined up along one end that allowed the tool to cut a kerf in a small piece of wood. They later replaced the copper with bronze, and the bronze with iron.
This new saw was effective, but was not very specialized. It would react differently under different conditions. Eventually more complex designs were discovered. These new designs allowed for the precision cutting of hardwood, softwood, with the grain, against the grain, and even raked out the unwanted sawdust. These saws differed in the layout of the teeth. Instead of the jawbone patter the teeth were placed in a "left-right-angled" pattern, to rake the sawdust, and were placed at different distances depending on the substance being cut.
Honeycutt 2
As these handsaws progressed and continued to make the job of the wood worker less difficult logger began to take interest in the idea of a saw. This led to the invention of the large two-handled tree saw, which replaced the ax. This saw was made so that two men operated it, one on each side of the tree. The saw was designed to where it had teeth cutting in both directions. This almost doubled the number of trees that could be cut in one day.
Now that the gross number of trees being cut each day had doubled problems of how to cut the logs into boards arose.
If the blade did not hit the exact spot on the neck it would become as though it was an axe. It would hack away until the head came off. After all the chopping, the blade will often become dull. Throughout the revolution, the blade was changed, it became angled. The angling of the blade helps kill faster.
The earliest evidence of welding dates back to the Bronze Age. The earliest examples of welding that have been found to date are welded gold boxes belonging to civilizations that thrived during the bronze age. There is evidence supporting the fact that even the Egyptians developed a form of welding. Several of their iron tools were made by welding. During the Middle Ages, a set of blacksmiths came to the forefront, crafting tools, weapons and other necessities. Blacksmiths of the Middle Ages welded various types of iron tools by hammering. The welding methods remained more or less unchanged until the 19th century. Where welding methods began to resemble conventional welding processes through innovations made through
At the time when humans were learning to use spears constructed out of sticks and stones and the
The Remington RM1425 Limb N Trim 8 Amp 14-Inch Electric Chainsaw, a corded electric chainsaw that has a 14 inch low kickback bar and chain that comes with an electric motor that has been powered with 8 amperage, makes the ideal equipment for any of your limbing and trimming task and for cutting smaller trees. This unit also has a dry weight of only 6.25 pounds that measures 8 x 7 x 14 inches and this makes it easier for the user to control and maneuver the equipment without having to break a sweat. This machine is not only fairly priced, but it also guarantees great quality according to various user reviews.
The people of the Eastern Woodlands made many tools to help them in their everyday lives. They made spears, weirs, nets, bows and arrows, lances, knives, taps, snares and deadfall for hunting. Most of those tools were made of wood or bark and other forest material. Arrowheads were made from chert, or flint, from sedimentary rocks. They were shaped like isosceles triangles, the smallest arrows were used for hunting birds, the bigger ones were to spear bears or deer. Flint knives were often oval, or teardrop shaped. For fishing they made spears, weirs, and nets. They also made canoes from hollowed-out trees to help with fishing in the lakes and streams. Some other tools they made were axes made of stone to strip bark, clear fields and removing fat from hides. Axes
The woodworker had many tools to help him get the job done. Among them, he used saws to cut. Saws were not new tools. They had been used for over 5,000 years by the time the colonial woodworker utilized them. He used different types of sa...
(Kumar et al., 2008a). Globally, 1.3 1010 metric tons of wood is produced by terrestrial
which was made out of small pieces of wood that had small rope attached to them, and to start
...en wrapped around a roller that was set in a wood or iron box securely fastened to the ground about twice the height of the tree away. A crank would then be turned rotating a wheel at the end of the roller until the tree bent to the ground with its roots pulled up. The tree feller left no roots in the ground and was quick. Another invention that was developed during the canal era was the stump puller. A chain was wrapped around a stump and then attached to a spool that was about fourteen feet across. A team of mules or oxen pulled a cable on the spool, the chain lost slack eventually pulling the stump. The stump puller was expensive, but was efficient and pulled forty stumps a day.
Welding was invented in the 1900s but lets go back a little to middle age that was when blacksmithing was the best method to use before welding. Now Edmund Davy of England was the one who discovered acetylene in 1836. Some of the others inventors were Auguste De Meritens who worked on how heating of an arc can join two pieces of metal, C.L. Coffin was one one who created a welding process with an electrode. There was other people that helped make welding more efficient. As the years past by welding was getting...
As long as humans have lived in forested areas, they have cut down trees for lumber and/or to clear space for agricultural purposes. However, this practice has resulted in the destruction and near extinction of our national forests. Today, fewer than five percent of our country's original forests remain (Thirteen) and the U.S. Forest Service continues to allow more than 136,000 square miles to be logged each year (Byrant). Even more alarming, is the fact that only twenty percent of the current public forest lands are permanently protected by law, leaving nearly eighty percent to be consumed by chainsaws and bulldozers (Heritage...).
Taking wood from rainforests and old-growth forests is detrimental to the environment and society. However, it is possible for us to have sustainable wood if we make an effort.
Welding whether its tungsten inert gas, metal inert gas, stick electrode arc, or oxyacetylene torch welding, welding is an incredibly freeing art. Welding allows you to create unlike any other form or sculpting or building process. It is not only an art it is also a building method and is very commonly used in the construction industry to build very strong rigid structures.
During the middle ages welding was very common. Early Egyptians learned the art of welding. Several of their tools were made by welding. A set of specialized workmen called blacksmiths created tools by melting the metal, then hammering them together. This method did not change much until the dawn of the 19th century which held major breakthroughs in welding. An open flame (acetylene) was very important to the history of welding. It allowed manufactures to make metal tools and equipment. In 1836 a man named Edmund Davy discovered acetylene which was soon utilized in the welding industries. Coated metal electrodes were first introduced in the 1900s. A coating of lime covered the electrode and made the weld much more stable. A number of other welding processes were also invented, such as seam welding, spot welding, flash butt welding, and projection welding. Stick welding also became popular around this time too. In the 1920s automatic welding was first introduced by P.O. Nobel. Automatic welding integrated the use of arc voltage and bare wire. It was mainly used for fixing old, molding metals. Several types of electrodes were also developed during this decade. A new type of welding was developed in the 1940s by Meredith. This became known as Heliarc Welding. Gas shielded arc welding or GTAW was another significant milestone in the welding history. Several advancements in the welding field were made in the 1960s. Dual shield, inner shield, and electro slag were some of the more important kinds developed. Plasma arc was also invented and was mainly used for metal spraying. Even now more techniques are being made. For example, laser welding was developed by the Russians and is being used more and more every day (“Welcome to
Woodworking, a form of carpentry, has been around for centuries and overtime developed into a more modern art. Today people will mostly see woodwork in homes in the form of furniture and decorations, or even smaller things such as family heirlooms passed down by generations and simple crafts made by younger generations. The skill of woodworking, however, is not inherited but takes practice and years of experience to fully master. Even experienced woodworkers run into challenges sometimes. The key is to overcome that obstacle and find different ways to create something new from a piece of wood. It is interesting to see and go through the process in which a woodworker goes through