WEBVTT

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A worn shear can leave a

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burr of zero point zero five

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millimetres:

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fifty microns of bare steel.

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Zoom in.

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The insulation
coating is only a

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few microns thick.

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A burr can bridge it and

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touch the next sheet.

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If contacts close
a conducting loop

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linked by changing
magnetic flux,

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current can circulate
through several

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sheets and create
local heating.

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The article's zero
point zero two

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millimetre limit
equals twenty microns.

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It reduces risk;

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it does not guarantee
electrical isolation.

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Check burr height
through the run.

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Use the measured
trend to trigger

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blade maintenance.

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Match clearance to
steel thickness,

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and control clamping.

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Ask for measurements by lot,

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alongside the stated
acceptance limit.