Product Specification :
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Product Specification: Leather Punch (Revolving Head)
A Leather Punch, often called a rotary punch or hole punch plier, is a specialized hand tool designed to create clean, circular holes in leather, rubber, plastic, and other soft materials. The most common industrial and hobbyist version features a revolving turret with multiple punch sizes.
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1. General Characteristics
- Design Type: Plier-action with a revolving turret (6-tube head).
- Mechanism: Compound-lever or spring-tensioned handle for increased cutting force.
- Punch Tubes: Hollow, sharpened cylindrical steel tubes.
- Anvil: A flat brass or plastic base plate that the punch hits to ensure a clean cut without dulling the blade.
2. Material & Construction
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Feature
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Specification
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Punch Tubes
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Heat-treated Carbon Steel or Hardened Tool Steel.
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Body Material
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Heavy-duty Chrome-Plated Steel or Powder-Coated Steel.
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Handle Grip
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Ergonomic PVC/Rubber dipped or contoured plastic for comfort.
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Anvil Material
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Brass (standard for durability) or high-density Polyethylene.
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3. Dimensional Standards (Punch Sizes)
Most standard revolving leather punches include six distinct hole sizes on a single turret:
- Metric Sizes: 2.0mm, 2.5mm, 3.0mm, 3.5mm, 4.0mm, and 4.5mm.
- Imperial Equivalents: 5/64", 3/32", 1/8", 9/64", 5/32", and 11/64".
- Hole Type: Round (Standard), though specialized punches exist for oval or square holes.
4. Key Performance Requirements
- Edge Retention: Punch tubes must remain sharp through hundreds of cycles in 4mm thick bridle leather.
- Alignment: The revolving head must click into a locked position so the punch tube is perfectly centered over the anvil.
- Clearance: Hollow tubes should allow waste material (slugs) to eject freely through the side or top to prevent clogging.
- Leverage: High-quality models often use a double-lever mechanism to reduce the hand force required by up to 70%.
5. Common Applications
- Leathercraft: Adding holes to belts, watch straps, and saddlery.
- Repair: Adjusting shoe straps or handbag handles.
- Industrial: Gasket making and heavy-duty fabric punching (canvas/denim).
