Craft · 6 pages · 12 min
How a cutting edge is a wedge
A cutting edge is a wedge that turns a push into sideways force that splits material.
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From the opening
A cutting edge is a wedge: two faces meet at a thin angle so a push along the tool becomes a sideways force that separates the material. The sharper the meeting, the less stuff must be pushed aside, and the less metal is left to support the edge. The opening covers two faces meet in a wedge, a fine angle parts material easily, and a stout angle survives impact.
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Inside
- Two faces meet in a wedge
- A fine angle parts material easily
- A stout angle survives impact
- A rolled tip stops cutting
- Where the idea stops applying
- A distinction worth keeping
Sources
- Wedge geometry of a cutting edge
- Edge angle and support behind the apex