Skateboard

Because a tail bone makes the execution of an ollie more difficult and because the skateboard decks today don't last as long as in the 1980's a tail bone is today a very rare accessory. More info at Master Craftsman Program. It's purpose is to protect the tail of the deck from wear. One of those establishments is Florida State University's Master Craftsman Program who recently completed the world's largest secular stained-glass windows installed in Bobby Bowden Field at Doak Campbell Stadium. Tail bone, aka tail guard: A piece of plastic fastened under the tail of a skateboard. Today there are few academic establishments that teach the traditional skillset. It's purpose is to protect the nose of the deck from being damaged when the skateboard hits an obstacle. German artists led the way, notable artists include Ervin Bossanyi, Ludwig Shaffrath, Johannes Shreiter and many others who transformed an ancient art form into a contemporary art form.

Nose guard: Plastic "bumpers" fastened to the nose of a skateboard. The impetus for this new modern glass was the restoration of thousands of church windows throughout Europe, destroyed by World War II. It's also called a "Bird" since it's shape resembles the shape your hand makes when giving someone the bird. After centuries of repetition and little innovation, stained glass underwent a major renaissance of form. Their purpose is to prevent the skateboard from being stopped when the truck hits an obstacle (for example when rolling up a curb). Stained glass is an art and a craft that requires the artistic skill to conceive of the design and the engineering skills necessary to assemble the piece so that it is capable of supporting its own weight and (for a window) surviving the elements. Lappers: Plastic covers fastened on the inside of the truck that covered the kingpin and the baseplate. Historians have long argued about whether La Farge or Tiffany invented the copper-foil alternative to lead came, but Tiffany is universally credited with developing an opalescent colored glass and with making extensive use of copper-foil in windows, lamps, and other decorations.

They were invented during a time when street skating was in it's infancy but were not very popular since they wore out very quickly and had to be replaced often. Important contributions to the art were made by William Morris (English, 1834-1898), Edward Burne-Jones (English, 1833-1898), John La Farge (American, 1835-1910) and Louis Comfort Tiffany (American, 1848-1933). Copers: Plastic covers fastened under the truck's hanger which provide a more slippery surface when grinding. In the nineteenth century, Romanticism and the Gothic revival caused renewed interest in stained glass. Most skateboarders no longer use rails, since the boards have become lighter and thus holding a grab during aerial tricks has become easier. Integrated with the lofty verticals of Gothic cathedrals, large windows afforded greater illumination that was regarded as symbolic of divine grace. They also provide a more slippery surface and protect the deck from scratches during board slides. As the solid Romanesque wall was eliminated, the use of glass could be and was expanded.

They used to be popular among vert skaters to whom they provided additional grip during aerial tricks. Begun in Eastern Asia and among Muslim designers, the art of stained glass reached its height in the Middle Ages, particularly 1150-1250. Rails: Narrow plastic strips that were fastened under the deck along the edges. Emphasis may be achieved by choices in came or foil width. But desipte all of this, risers are not a necessary component on the skateboard. Chemical patinas may be added to the came and solder to even-out color variations or to emphasize details. More risers will equal a higher board which also increases the "pop" a rider gets when pushing down on the tail to perform an ollie, requiring less effort to get a higher ollie. The panel may then be installed in a frame to create a window.

Another reason riders install risers is that they evenly distribute impact force from the trucks to the deck, meaning less chance of the deck cracking under pressure. Once assembled, a bead of solder is then run across every spot of visible copper foil. This rises the deck from the ground slightly, helping to avoid "wheel-bite",. Alternatively, the copper-foil method can used, in which each individual piece is wrapped around its edge with a copper adhesive tape. Risers are placed in between the underside of the deck and the truck. Lastly, the ears are pressed down against the glass, securing the piece and further waterproofing the panel. Risers - There are special products available to help raise the board away from the trucks and the ground. After this waterproofing putty made of linseed oil and chalk is forced in the space between the glass and lead.

It allows less friction and top speeds. Then all these joints are soldered together with a 60/40 lead/tin solder. The Best Bearings are Super Swiss Six, the balls inside the case of the bearing are made of ceramic clay instead of the traditional metal. The ends of the came are tucked under the ears of the other lead it meets. Higher numbers indicate that the bearing comforms to a higher degree of precision. The two surfaces on each end of the H are called the "face." Each piece of glass is set in place upon a glazing drawing, with came shaped around it to make a matrix. Bearings are graded according to the ABEC scale, which goes from 1-9, in odd numbers. The middle part of the H is called the heart, which connect to the "ears" of the lead.

Bearings - Inside each wheel are seven precision ball bearings, secured by a plastic "crown". The cross-section of a piece of came is shaped like an "H". For general cruising most users prefer larger, softer wheels. The pieces are then fitted into channeled lead strips, which are also called came. Smaller sizes like 52-55mm keep the board closer to the ground and are lighter which makes tricks easier to perform. Further shaping can be done by grinding or cutting with a diamond ring saw. Larger sizes like 65-80mm roll faster which makes riding vert ramps easier. Glass is cut using a steel or carbide wheel that scores the glass, making a tiny imperfection along which the glass is broken into it's shape.

The wheels, usually made of polyurethane and come in nine different sizes and suit different types of skating. Stained glass windows involve the art of cutting colored glass into different shapes. Wheels - The wheels attach to each hanger. Stained glass is sold by weight, in sheets, usually about 3' x 4'. A bolt called a kingpin holds these parts together. These different textures cause the glass to have light and color transmission characteristics that, even for the same color, can provide surprising results. The softer the bushings, the easier it is to turn. These colored glasses are available in many different textures—smooth, wavy, rippled, hammered, pebbled, or very rough.

The stiffer the bushings, the more stable the skateboard. This is where we have derived the term "stained glass". The bushings cushion the truck when it turns. The oxides permanently fuse with the glass to produce the painting. Between the baseplate and the hanger are bushings, also rubbers or grommets, that provide the spring mechanism for turning the skateboard. This process is, in itself, an art. The top part of the truck is screwed to the deck and is called the baseplate, and beneath it is the hanger. The piece is then fired in a kiln.

The trucks are further composed of two parts. If fine details such as shadows or outlines are required, the artist paints them on the cold glass with special paint made from metal oxides. Trucks - Attached to the deck are two metal (usually aluminum) trucks, which connect to the wheels. Early stained glass artists were limited to a very few primary colors, but today almost any color can be produced. The longboard, a common variant of the skateboard, has a longer deck. The molten glass is then annealed slowly in a furnace to produce sheets of colored glass. Skateboard decks are usually between 28 and 32.5 inches long. For example, using the metal copper would produce green or blue glass.

Narrower decks are suited to street skaters who like to perform more technical tricks; a wide board often makes it awkward to pull off such maneuvers. The term "stained glass" today generally refers to glass that has been colored by added metallic salts during its manufacture. Wider decks are better suited to vert skaters who need more control and stability while riding down the steep slopes and riding the transitions and walls of a halfpipe. The deck is normally 7 1/2 to 8 inches wide. An average, all wood deck costs about $50 (US) while a deck including a material such as fiberglass in it can cost up to $70 or so (US).

Sometimes other composite materials, such as fiberglass and Kevlar, are incorporated into deck construction, usually to lighten the board or increase its strength or rigidity. This is what gives the deck its strength. The plies of maple are cross-laminated, meaning the direction of the wood grain alternates between plies. Decks were originally a single piece of wood but are now usually made from seven plies of Canadian Hard Rock Maple glued together.

It is covered with grip tape, which adds friction to its surface. The deck forms the body of the skateboard and provides a place to stand. Deck - Skateboards are composed of several parts. .

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. Another difference is that the boards of the past had a very small nose, today's boards have almost identical noses and tails (the nose is usually a bit steeper however). The trucks (axles) were also larger in size and less sturdy.

The wheels were rather large compared to most of today's sizes and were usually made of clay. Boards in the past were often in the shape of a surfboard, with little concave and had 1 ply of wood. The skateboard has evolved a lot since the 50s, not only in shape but also materials used. They are typically part of western youth culture.

It was developed in the twentieth century by surfers, who first made them using rollerskates. A skateboard is a narrow wheeled platform (usually made of 7 ply maple), used for recreation and transportation.