WEBVTT

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A correct sheet
can still form

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an incorrect joint.

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Step lap needs a
controlled offset

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between layers.

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Errors at both
mating ends change

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that overlap.

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Consider the article's
geometric example.

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A four hundred
millimetre wide sheet

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has a forty five degree joint

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about five hundred
sixty six millimetres

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long.

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With one end aligned,

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a zero point one
degree mismatch

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opens a wedge
reaching about one

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millimetre.

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This is a calculation,

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not a measured
production result.

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A systematic angle
error repeats through

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the run.

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Verify angle at
setup and during

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production.

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Measure length, use
fixed stacking guides,

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and retain first
article and process

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records.

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Specify tolerances for
the assembled joint,

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not only individual sheets.