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This is a selected list of Source engine mods (modifications), the game engine created by Valve for most of their games, including Half-Life, Team Fortress 2, and Portal, as well as licensed to third parties. This list is divided into single-player and multiplayer mods.
Paraffin represented a major advance in the candle-making industry because it burned cleanly and was cheaper to manufacture than other candle fuels such as beeswax and tallow. Paraffin wax initially suffered from a low melting point. This was remedied by adding stearic acid. The production of paraffin wax enjoyed a boom in the early 20th ...
Sealed letters and means of application. Sealing wax is available in the form of sticks, sometimes with a wick, or as granules.The stick is melted at one end (but not ignited or blackened), or the granules heated in a spoon, normally using a flame, and then placed where required, usually on the flap of an envelope.
Beeswax candles are purported to be superior to other wax candles, because they burn brighter and longer, do not bend, and burn cleaner. [15] It is further recommended for the making of other candles used in the liturgy of the Roman Catholic Church. [16] Beeswax is also the candle constituent of choice in the Eastern Orthodox Church. [17] [18]
It is a combination of plaster mold casting and investment casting. [2] [3] There are two types of ceramic mold casting: the Shaw process and the Unicast process. [4] These casting processes are commonly used to make tooling, especially drop forging dies, but also injection molding dies, die casting dies, glass molds, stamping dies, and ...
Sand casting involves the use of hot molten glass poured directly into a preformed mould. [5] It is a process similar to casting metal into a mould. The sand mould is typically prepared by using a mixture of clean sand and a small proportion of the water-absorbing clay bentonite.
Candle moulding machine in Indonesia circa 1920. Candle making was developed independently in a number of countries around the world. [1]Candles were primarily made from tallow and beeswax in Europe from the Roman period until the modern era, when spermaceti (from sperm whales) was used in the 18th and 19th centuries, [2] and purified animal fats and paraffin wax since the 19th century. [1]
Blown three-mold glass was sometimes called “prest” (pressed) because the glass was blown into a mold and “impressed” with a design. [29] Various names for blown three mold glass have been used by collectors since its rediscovery in the early 20th century. It was first called “Stiegel glass” by collector Frederick W. Hunter because ...