The document discusses surface textures and machining symbols. It covers topics such as how surface conditions can vary depending on whether a part is machined, cast, or forged. It also addresses what type of surface is needed for a product's function, including smooth, rough or patterned surfaces. The document provides examples of machining symbols and notes on indicating machining allowances and surface roughness.

1. © R. Jerz 1 Apr-06
Surface Texture &
Machining Symbols
Surface Texture &
Machining Symbols

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Surface Conditions VarySurface Conditions Vary
Machined
Cast
Forged

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What is needed for
product function?
What is needed for
product function?
Smooth
Rough
Patterned

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Extra Stock for CastingsExtra Stock for Castings

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Machined SurfacesMachined Surfaces

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Surface Roughness by ProcessSurface Roughness by Process

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Machining SymbolsMachining Symbols

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Finish MarksFinish Marks
Shown in edge view

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Recommended SymbolRecommended Symbol

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Casting ExampleCasting Example

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SymbolsSymbols

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Complete SymbolComplete Symbol

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Example of SymbolsExample of Symbols

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Indicating Machining
Allowance
Indicating Machining
Allowance

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Machining NotesMachining Notes
Finish All Over (FAO)

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ApplicationApplication

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Surface RoughnessSurface Roughness