Engraving tools are very small chisels normally made of hard steel. They are basically chip forming tools and subject to exactly the same forces mentioned in Chapter 5. In right hand side of this picture there is a wedge shaped metal plate that has been pressed or rolled onto the metal being cut. The engraving tool is inserted into this slot and turned by a clock shaped wheel on either side of the engraver. In this way a pattern of slant is produced on the engraved metal, much like the cutting tools in chiseling. In right hand side of this picture the metal plate has been raised above the rest of the engraver.
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This tool fits over a number of grinders that in turn fit over an array of engravers, chiseled or engraved. The engravers are typically diamond tipped which means that they can be used for cutting and polishing metals as well as other stone like substances. A great many engravers in existence today make use of laser technology. This basically means that these machines are able to stamp out patterns of any desired shape directly without the use of the actual tool itself. This is a much faster process than that of the typical chisel and graver tools, and engravers with this kind of equipment are now seen commonly used by tile makers all across the globe.
In terms of the materials these engraving tools can be made out of, there are numerous, and include glass, aluminium, brass, bronze, wood, stainless steel and titanium. Brass and wood engraving tools can create a very smooth and detailed embossing effect. Titanium is said to have the most durable material for engraving, but is also the priciest of all. Aluminum oxide is the cheapest of all and is durable enough to produce a decent engraving. The best engraving tools require diamond or ceramic carbide stones which are quite expensive to buy.