How these impossibly thin cuts are made

A video on YouTube. In Science & Engineering, a Krater category.

Summary by Krater

Steve Mould explores how wire electrical discharge machining (EDM) works to cut metal with extreme precision without visible seams, and explains its manufacturing applications.

From the video

Answers: How does wire electrical discharge machining work to create invisible seams?

Wire electrical discharge machining
EDM manufacturing precision
Invisible seams in metal fabrication
Wire EDM vs traditional cutting tools

What it concludes

Wire EDM uses electrical discharges through an insulated liquid to erode metal without physical contact between the tool and the part.
The tool and part never touch during wire EDM, preventing them from perturbing each other and achieving high precision.
Wire EDM leaves a gap equal to the width of the wire plus the spark gap, which must be accounted for in CAD software.
The Henson AL13 safety razor is CNC machined to aerospace standards with all-metal blade support.

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