The casting process: Lynchburg and Archer Creek Plants A casting was made by pouring molten metal into a sand mold of the desired shaped. Once the metal, leaving a casting. There were four steps in making a casting: melting and allowing the metal, making molds and cores. Melting and Alloying The raw matterials were received by rail car in the iron yard behind the plant. The raw materials included coke for melting fuel, limestone to promote the coagulation of slag or impurities, pig iron for carbon and silicon, and steel scrap for the iron
There are stone mortars and presses used for olive oil extraction that date back to 5000 BC ( History of olive oil in Israel ). Archaeological findings from the Minoan Palaces in Crete are fine examples of olive oil’s role in the Cretan or Minoan civilization, which reached its zenith between 2000 and 1450 BC. Archaeological finds proving that the Minoans used olive oil in their daily lives are found everywhere in Crete. One particularly impressive discovery is the untouched olives with the flesh preserved, found at the bottom of a cup sunk in a water cistern at the Minoan Palace of Kato Zakros. The Minoans used olive oil in their diet, as a cleanser instead of soap, as the base for scents and ointments, as a medicine, in tanning, for lighting and to protect delicate surfaces.
To make the clay, 250 mL of distilled water was heated in a 600 mL beaker to 70° to be used as a hot water bath for the Erlenmeyer flask. 40 mL of distilled water was added to the flask along with .80 g of FeCl3, .40 g of FeSO4-, and .30 g of Bentonite. Using tongs, the flask was stirred in the hot water bath to disperse the iron compounds and the clay. The flask was then taken out of the hot water bath and 20 mL of NaOH was added drop-wise. After it was properly cooled, the solution was equally distributed to four centrifuge tubes and centrifuged for 5 minutes.
First, the artist would form a clay core that would have the shape of what he wanted the piece of art to be. He would then proceed to cover the template with wax and carve elaborate details into it, making a template. This would then be covered with more clay and the whole template would then be put into the fire. The wax would melt away (thus the name “lost-wax”) and what was left was a clay mold, that could then be poured over with bronze, leaving a piece of art. The Benin Bronzes, including Oba with the Europeans are now mostly distributed around museums in Europe and the United States.
If it is cupped, sand it flat. If the floor is flat, fill if necessary and screen and recoat. If the subfloor is plywood over concrete, it is unlikely that the plywood and concrete subfloor will dry out in a reasonable time. Full removal to concrete usually is best to allow the slab to dry. In cases where you have determined that the flooring system has not returned to normal levels, do not succumb to pressure from involved parties for a quick fix.
During the process of TIG welding, an arc is formed between a pointed tungsten electrode and the area to be welded. As a result of the gas shield, a clean weld is formed. This prevents oxidization from occurring. The arc is started with a tungsten electrode shielded by inert gas and filler rod is fed into the weld puddle separately. A slower process than MIG, it produces a more precise weld and can be used at lower amperages for thinner metal and can be used on exotic metals.
At Mount Gabriel, Co. Cork, a wooden pick, shovel, stone mauls and tapers of resinous wood to provide light were among the equipment found in mines dated to the Early Bronze Age. During the Early Bronze Age the principal products were made from sheet gold, and include sundiscs made from a thin sheet of pure gold. A geometric decoration (Zig Zags, concentric circles) was then beaten from the back using what was known as the “repousse” technique. sun dics The crescent-shaped gold collars called lunula, with expanded horn terminals set at right angles to the plane of the crescent, is the most characteristic gold object of the Irish Early Bronze Age. More than 100 are known from western Europe, of which more than 80 have been found in Ireland.
Kyle Burke Throwing on the Potter’s Wheel Sitting at the wheel with a perfectly centered cylinder of clay gliding through slip covered hands, can be an activity that brings peace, as well as a feeling of empowerment; I cant help but feel that I will be a potter for the rest of my life. As early as 24,000 BC, humans were involved in ceramics (History, Par. 1). Back this far in our past, only simple figurines were constructed out of clay and made into the shapes of animals and humans. It was not until almost 10,000 years later, as communities have begun to be established, that the use for clay had evolved.
Water serves as a solvent which means it dissolves other ingredients such as salt, sugar and yeast to produce a solution. Also, the dough can be soften by water. So a flexible texture are provided for the gas expanding. If the dough is too hard, it is difficult for dough to create volume to trap the CO2. Experiment 1B Baking Results and discussion After place the dough in a pre-warmed oven at 200 degree and bake for 30 to 45mintues, the crust will be golden brown.
Christian Guerra Pottery So I looked at the types of pottery, and I also looked at different regions of when they were made. Pottery is made by forming a body of clay, arranging it to a certain shape and then firing them in high temperatures. The end result is a hard surface that is stronger. There are also different styles of creating pottery. You can do it by Hand building, which is constructing by coils of clay.