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What is the difference between mold and die?
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Need context!

"Mold" as a noun is a very primative plant, similar to a fungus. It grows on the ground or on dead wood or other organic matter, such as old food. When used as a verb, the subject "acquires" a growth of mold, or becomes "moldy." When bread becomes moldy it turns green, the color of the mold which is growing on it.

Living things are less likely to acquire a growth of mold. When they die, the microscopic mold spores which are usually present in the air often land on their surfaces and begin to grow, being nourished by the decaying organic matter from the thing which has died.

Often excessive moisture on unprotected wood surfaces will encourage the mold to grow, especially outdoors. Food will be less likely to mold if kept refrigerated.
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I suspect it's more of this meaning (thank you www.m-w.com ):

Mold:

1: distinctive nature or character : type 2: the frame on or around which an object is constructed3 a: a cavity in which a substance is shaped: as (1): a matrix for casting metal <a bullet mold> (2): a form in which food is given a decorative shape b: a molded object

and this one:

3plural dies : any of various tools or devices for imparting a desired shape, form, or finish to a material or for impressing an object or material: as a (1): the larger of a pair of cutting or shaping tools that when moved toward each other produce a desired form in or impress a desired device on an object by pressure or by a blow (2): a device composed of a pair of such tools b: a hollow internally threaded screw-cutting tool used for forming screw threads c: a mold into which molten metal or other material is forced d: a perforated block through which metal or plastic is drawn or extruded for shaping

I believe you use a mold for liquids or soft substances and it takes shape around or inside the mold, while a die is used to force that shape on hard substances. But an engineer or other technical person will set us straight.
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Oh, Sh--!

A mold would be used in casting, but a plastic molding machine (extruder) forces molten plastic through a die, imparting its shape. Dies are also used in metal stamping and cold-forming, and by plumbers and machinists for cutting external threads, as GG said - opposite of "taps," which cut internal threads. Some plumbers would call a die a "pipe threader."

Moulding also describes the work of someone who shapes clay.

"Blow moulding" is an interesting variation for making plastic bottles, in which a molten tube is extruded downward, then encased in a separable mold. A blast of air then forces the molten tube outward until it assumes the shape of the mold.
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Anonymous:

Mould :- It is used for macking 3-d product like chair table bucket which have all three dimensions(length, width & hight) are pre fixed and shaped between core and cavity parts of mould. it is batch process or production is in strock by strock.

Die :- In this case we make 2-d product like pipe orifice etc. which have consider two dimension(diameter & thickness ) during macking die not length. Length can be modified according to client requirment or according to last end used. It is a continuse production

Regards

Amarjeet Vats

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Anonymous:
I discovered the difference between a mold and a die.

Basically, with a mold the shape of the part will be created within, or inside the mold via a liquid or molten material being poured into the mold.

A die creates the shape on the outside of a piece of material.
Anonymous:
Jackson6612What is the difference between mould and die?

Anonymous:
What is the difference between Moulds and Dies in machine work
So-called "tool and die makers" are perhaps the highest paid machinists. Lower paid machinists then use some of these tools and dies. Mould making is also highly specialized precision work.

Dies are usually used in shaping maleable metals. It may be a hand operation, such as a plumber using a pipe die to cut a thread on the outer diameter of a metal pipe.

Or it may be a highly automated high production operation in which metal components are stamped out by a heavy press.

Dies are also used in plastic production to shape the outside of material being forced through an extruder.

A mould, on the other hand, doesn't shape things by cutting or extruding. Moulten material is poured into a form (mould), and allowed to cool. It may be metal (eg., cast iron) or plastic.
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