Search results
Results from the WOW.Com Content Network
Some discs used for cutting ceramic tile or stone are made from a solid disc with an edge coated with diamond grit. The most common size for these cutting wheels is 4 + 1 ⁄ 2 inches in diameter; however they can range from 2 to 16 inches in diameter with a thickness range from .045 in. to .125 in. Type 1 discs are flat, and type 27 discs have ...
Normally, tens or hundreds of diamond gang saw blades are used together to saw raw stone blocks. A diamond band saw blade is a flexible closed steel band with diamonds fixed (often by electroplating) on one edge of the band. Diamond blades designed for specific uses include marble, granite, concrete, asphalt, masonry, and gem-cutting blades.
The Anglo-Saxons who founded the Anglo-Saxon kingdoms of England preferred round disk brooches to either fibulae or penannular forms, also using gold and garnet cloisonné along with other styles. The finest and most famous collection of barbarian jewelry is the set for the adornment of (probably) an Anglo-Saxon king of about 620 recovered at ...
Examples of sanding discs using a quick-change mounting system. A quick-change system is commonly used with disc-type coated abrasives. A plastic or metal hub is bonded to one of the faces, which is threaded. This then mates directly to the sander or angle grinder or to a mandrel that can be mounted in a sander, grinder, or drill. The advantage ...
The idea of the bandsaw dates back to at least 1809, when William Newberry received a British patent for the idea, but bandsaws remained impractical largely because of the inability to produce accurate and durable blades using the technology of the day. [3]
In 1926, an attempt at reviving interest in Edison records was made by introducing a long-playing Diamond Disc which still rotated at 80 rpm but tripled the standard groove pitch to 450 threads per inch by using an ultra-fine groove, achieving a playing time of 24 minutes per 10-inch disc (12 on each side) and 40 minutes per 12-inch disc (these ...
Building material made from crushed tiles or bricks. Compluvium Open space left in the roof of the atrium of a Roman house (domus) for lighting and collection of rain water. Cornice Upper section of an entablature, a projecting shelf along the top of a wall often supported by brackets or corbels. Cruma Tough but porous igneous rock. Cubiculum
Nitrocellulose lacquer is spin-coated onto aluminium or glass discs, then a groove is cut with a lathe, to make one-off phonograph records, used as masters for pressing or for play in dance clubs. They are referred to as acetate discs. Depending on the manufacturing process, nitrocellulose is esterified to varying degrees.