The word tundish originates from a shallow wooden dish with an outlet channel, fitting into the bunghole

Bunghole

A Bunghole or Bungehole is a hole bored in a liquid-tight barrel to remove contents. The hole is capped with a large cork-like object called a bung. Acceptable usage include other access points that may be capped with alternate materials providing an air or water-tight access to other vessels. For...

 of a tun

Tun

- Science and technology :* TUN/TAP, a computer network device driver* TUN , a Danish product standard for building materials* Tun , a part of the Mayan long count calendar system* A unit of time in the Mayan Long Count calendar...

 or cask

CASK

Peripheral plasma membrane protein CASK is a protein that in humans is encoded by the CASK gene. This gene is also known by several other names: CMG 2 , calcium/calmodulin-dependent serine protein kinase 3 and membrane-associated guanylate kinase 2.-Genomics:This gene is located on the short arm of...

 and forming a kind of funnel

Funnel

A funnel is a pipe with a wide, often conical mouth and a narrow stem. It is used to channel liquid or fine-grained substances into containers with a small opening. Without a funnel, spillage would occur....

 for filling it. These were originally used in brewing

Brewing

Brewing is the production of beer through steeping a starch source in water and then fermenting with yeast. Brewing has taken place since around the 6th millennium BCE, and archeological evidence suggests that this technique was used in ancient Egypt...

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Plumbing

The term is still used today in plumbing, where a funnel or hopper is filled by an outlet pipe above it. This is often provided for intermittent overflows, or where an air gap is required, to avoid possible back-contamination

Backflow (plumbing)

Backflow is a term in plumbing for an unwanted flow of water in the reverse direction. It can be a serious health risk for the contamination of potable water supplies with foul water. In the most obvious case, a toilet flush cistern and its water supply must be isolated from the toilet bowl...

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Casting

In metal casting, a tundish is a broad, open container with one or more holes in the bottom. It is used to feed molten metal into an ingot mould so as to avoid splashing and give a smoother flow. The tundish allows a reservoir of metal to feed the casting machine while ladles are switched, thus acting as a buffer of hot metal, as well as smoothing out flow, regulating metal feed to the moulds and cleaning the metal. Metallic remains left inside a tundish are known as tundish skullshttp://www.websters-online-dictionary.org/Sk/Skull.html and need to be removed, typically by mechanical means (scraping, cutting). Scrap recovered in this way is ordinarily reused in the steelmaking process.. A casting tundish is lined with refrectory bricks depending upon the liquid metal which is being cast.