Question: Carborundum printmaking is a collagraph printmaking technique in which the image is created by adding light passages to a dark field, normally, cardboard or wood plates are coated in a layer of Silicon carbide (SiC), also known as carborundum, is a compound of silicon and carbon, synthetic silicon carbide powder has been mass-produced since which year?

<P0-S0> Reaction bonded silicon carbide, also known as siliconized silicon carbide or SiSiC, is a type of silicon carbide that is manufactured by a chemical reaction between porous carbon or graphite with molten silicon. <P0-S1>  Due to the left over traces of silicon, reaction bonded silicon carbide is often referred to as siliconized silicon carbide, or its abbreviation SiSiC. <SEP> <P1-S0> Carborundum printmaking is a collagraph printmaking technique in which the image is created by adding light passages to a dark field. <P1-S1>  It is a relatively new process invented in the US during the 1930s that allows artists to work on a large scale. <P1-S2>  Normally, cardboard or wood plates are coated in a layer of carborundum or screen, and the lights are created by filling in the texture with screen filler or glue. <P1-S3>  Carborundum prints may be printed as intaglio plates. <SEP> <P2-S0> Printmaking is the process of making artworks by printing, normally on paper. <P2-S1>  Printmaking normally covers only the process of creating prints that have an element of originality, rather than just being a photographic reproduction of a painting. <P2-S2>  Except in the case of monotyping, the process is capable of producing multiples of the same piece, which is called a print. <P2-S3>  Each print produced is not considered a "copy" but rather is considered an "original". <P2-S4>  This is because typically each print varies to an extent due to variables intrinsic to the printmaking process, and also because the imagery of a print is typically not simply a reproduction of another work but rather is often a unique image designed from the start to be expressed in a particular printmaking technique. <P2-S5>  A print may be known as an impression. <P2-S6>  Printmaking (other than monotyping) is not chosen only for its ability to produce multiple impressions, but rather for the unique qualities that each of the printmaking processes lends itself to. <SEP> <P3-S0> Silicon carbide (SiC), also known as carborundum , is a compound of silicon and carbon with chemical formula SiC. <P3-S1>  It occurs in nature as the extremely rare mineral moissanite. <P3-S2>  Synthetic silicon carbide powder has been mass-produced since 1893 for use as an abrasive. <P3-S3>  Grains of silicon carbide can be bonded together by sintering to form very hard ceramics that are widely used in applications requiring high endurance, such as car brakes, car clutches and ceramic plates in bulletproof vests. Electronic applications of silicon carbide such as light-emitting diodes (LEDs) and detectors in early radios were first demonstrated around 1907. <P3-S4>  SiC is used in semiconductor electronics devices that operate at high temperatures or high voltages, or both. <P3-S5>  Large single crystals of silicon carbide can be grown by the Lely method; they can be cut into gems known as synthetic moissanite. <P3-S6>  Silicon carbide with high surface area can be produced from SiO contained in plant material.