Tolerances should be specified to satisfy
functional requirements, but process
capabilities should also be considered
– Very close tolerances add cost but may not add
value to part
– As tolerances become tighter, costs generally
increase due to additional processing, fixturing,
inspection, sortation, rework, and scrap
Tolerances should be specified to satisfyfunctional requirements, but processcapabilities should also be considered– Very close tolerances add cost but may not addvalue to part– As tolerances become tighter, costs generallyincrease due to additional processing, fixturing,inspection, sortation, rework, and scrap
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