flame-cut surface
21Case hardening — or surface hardening is the process of hardening the surface of a metal, often a low carbon steel, by infusing elements into the material s surface, forming a thin layer of a harder alloy. Case hardening is usually done after the part in question …
22coal mining — Coal was very important in the economic development of Britain. It was used as fuel in the factories built during the Industrial Revolution and continued to be important until the 1980s. The main coalfields are in north east England, the north… …
23Lathe — A lathe (pronEng|ˈleɪð) is a machine tool which spins a block of material to perform various operations such as cutting, sanding, knurling, drilling, or deformation with tools that are applied to the workpiece to create an object which has… …
24List of Friday the 13th characters — Friday the 13th is an American horror franchise that consists of twelve slasher films, a television show, novels, and comic books. The main character in the series is Jason Voorhees, who drowned at Camp Crystal Lake as a boy due to the negligence …
25Grilling — Charbroil redirects here. For the G.I. Joe character, see Charbroil (G.I. Joe). Grilled redirects here. For the 2006 film, see Grilled (film). For Breaking Bad episode, see Grilled (Breaking Bad). Grilling mangals and kebabs …
26Internal ballistics — Internal ballistics, a subfield of ballistics, is the study of a projectile s behavior from the time its propellant s igniter is initiated until it exits the gun barrel. The study of internal ballistics is important to designers and users of… …
27explosive — explosively, adv. explosiveness, n. /ik sploh siv/, adj. 1. tending or serving to explode: an explosive temper; Nitroglycerin is an explosive substance. 2. pertaining to or of the nature of an explosion: explosive violence. 3. likely to lead to… …
28industrial polymers, major — Introduction chemical compounds used in the manufacture of synthetic industrial materials. In the commercial production of plastics, elastomers, man made fibres, adhesives, and surface coatings, a tremendous variety of polymers are… …
29MythBusters (2011 season) — Country of origin Australia United States Broadcast Original channel Discovery Channel Original run …
30Lampworking — is a type of glasswork that uses a gas fueled torch to melt rods and tubes of clear and colored glass. Once in a molten state, the glass is formed by blowing and shaping with a variety of tools and hand movements. It is also known as flameworking …
