what are some objects made by forging?
336786
Tools like hammers, hatchets.  Swords, Wrought iron fences.
943665
this is impossible to answer, there are many shapes that could be made this way.  do you have any other information like right angles or angles at corners?
330650
Engine blocks are built from mainly two kinds of materials. Cast iron and aluminum. Cast iron is much heavier, but incredibly durable. Aluminum is much lighter, but not as durable, and much more liable to crack and wear excessively, especially if overheated. So, most engine blocks are cast iron, although more and more aluminum blocks are being produced for production cars, where previously they were used mostly in racing. Cylinder heads are either cast iron or aluminum as well, but aluminum heads are becoming much more popular now days. Internal parts like valves, pistons, camshafts, rocker arms, pushrods, nuts, bolts, and crankshafts are generally cast iron or steel, however as new materials become available, some of these parts are built from things like titanium or other metals. Plastics and composite materials are becoming more prevalent for low-stress parts like valve covers, as new materials become available. Production cars are generally built with the most durable materials, because they are expected to last a lot longer. Race motors are built as light as possible, but are intended to be rebuilt or replaced frequently. Gaskets and seals are made of a variety of materials, from paper to rubber to neoprene, depending on how much flexibility is required and what chemicals they need to be resistant to. All the parts in an engine need to be extremely heat-resistant and corrosion-resistant, as engines run in excess of 250-300 degrees and parts are exposed to corrosive fluids, and some parts like exhaust systems get much hotter.
77153
Glass is composed of mainly silicone, heated to a high temperature until it forms a supercooled liquid. Sand is the most common form of raw material used in making glass though silica is sometimes used. Other materials can be added in to give extra strength or changes in its composition to make specialized products such as pyrex, coloration and certain metals are added to add colour to it.
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It's either cast (the steel is molten and poured into a mold, like a Bundt cake), or extruded.  All by machine.
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Metal Forging (using water to cool off the large hot steel - steam could be used to turn turbines to generate electricity
1082005
three legged matel object mostly of iron...used as a stand to place beakers, funnels etc when heating them.
899857
A solid that is formed by a chemical reaction.
645368
They are cast onto flat aluminum, then molded. Not so difficult.
688922
Ferro-Chrome alloys, and a few other alloys.\n\nNickel Chrome, Cobalt Nickel Chrome Moly, Nickel Chrome, Irom Chrome Aluminim etc
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Do you mean to make a plastic copy of something? Say an anthropologist wants to experiment with an old skull, but can't take a chance on ruining the original? There is a polymer that will form from it monomer when light strikes it. So a controlled laser writing onto the liquid can creat a plastic piece. \nUCSD has a laser that cuts paper and glues the layers one piece at a time to make copies. The results looks like a brown wood.
21884
http://www.uyseg.org/industryanimated/teachers%20notes/extrusion_moulding.pdf\nThis file is good\n\nhttp://www.atplas.com/poly/ateva/moulding.htm\n\nExtrusion Moulding is a manufacturing process used to make pipes, hoses, drinking straws, curtain tracks, rods, and fibres\nhttp://en.wikipedia.org/wiki/Extrusion_Moulding
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This is how things are made.
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Depends on what you are fabricating. \nAre you talking about making the material itself or fabricating structural components from stainless materials?\n\nAnd what type of material? What grade of stainless? What configuration? Angle iron or I-beam? Welded or bolted?\n\nSounds like you need to talk with an experienced estimator and/or structural engineer.
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Piston Manufacturing Techniques\n\nPistons are manufactured via a cast or forged technique. Some consider hypereutectic pistons to be the “third manufacturing technique”, but as they are actually a cast piston with physical properties that fall between cast and forged pistons due to their unique aluminum alloy. \n\nCast pistons are made by pouring melted aluminum into a mold that shapes the metal into a piston.\n\nForged pistons are formed using a giant press that takes a block of metal and pounds it into shape under thousands of tons of pressure. The tooling needed to do this is much more expensive than the tooling used to make a casting, and it wears out quicker. This makes forged pistons more costly. Forged pistons have inherent advantages in terms of density, ultimate strength, and durability. Forging eliminates metal porosity, improves ductility, and generally allows the piston to run cooler than a cast unit. Within reason, forgings can be lightened without adversely affecting structural integrity. However, forged pistons expand and contract more under changing temperatures, so they traditionally require greater piston-to-wall clearance than cast pistons. The manufacturing technique produces a metal slug, which is then CNC milled to produce the final piston shape.\n\nPiston Alloys\n\nWith regard to cast piston, they generally use aluminum alloys doped with silicone. Aluminum silicon alloys used fall into three major categories: eutectic, hypoeutectic, and hypereutectic. Probably the easiest way to describe these categories is to use the analogy of sugar added to a glass of iced tea. When sugar is added and stirred into the iced tea it dissolves and becomes inseparable from the iced tea. If sugar is continuously added, the tea actually becomes saturated with sugar and no matter how much you stir, the excess sugar will not mix in and simply falls to the bottom of the glass in crystal form.\n\nSilicon additions to aluminum are very similar to the sugar addition to the iced tea. Silicon can be added and dissolved into aluminum so it, too, becomes inseparable from the aluminum. If these additions continue, the aluminum will eventually become saturated with silicon. Silicon added above this saturation point will precipitate out in the form of hard, primary silicon particles similar to the excess sugar in the iced tea.\n\nThis point of saturation in aluminum is known as the eutectic and occurs when the silicon level reaches 12%. Aluminum with silicon levels below 12% are known as hypoeutectic (the silicon is dissolved into the aluminum matrix). Aluminum with silicon levels above 12% are known as hypereutectic (aluminum with 16% silicon has 12% dissolved silicon and 4% shows up as primary silicon crystals).\n\nPistons produced from these alloy categories each have their own characteristics. Hypoeutectic pistons usually have about 9% silicon. This alloy has been the industry standard for many years but is being phased out in favor of eutectic and hypereutectic versions. Most eutectic pistons range from 11% to 12% silicon.\n\nEutectic alloys exhibit good strength and are economical to produce. Hypereutectic pistons have silicon content above 12%. In addition to greater strength, scuff, and seizure resistance, the hypereutectic will improve groove wear and resist cracking in the crown area where operating temperatures are severe.\n\nIt is the primary silicon that gives the hypereutectic it’s thermal and wear characteristics. The primary silicon acts as small insulators keeping the heat in the combustion chamber and prevents heat transfer, thus allowing the rest of the piston to run cooler. Hypereutectic aluminum has 15% less thermal expansion than conventional piston alloys.
102173
Making a map (reducing)\nLooking at something with a magnifying glass (enlarging)\nUsing a blueprint to construct a building (enlarging)
884955
a comb, a cog or gear, a saw, a zipper,a human skull....