What “large face clamp” means

A large face clamp is the clamping style on the knife holder/tool head: it presses the insert firmly against a broad face of the pocket, which helps keep the knife stable under higher feed, harder stock, or interrupted cutting. In practice, this is common on indexable woodworking cutter heads and changeable knife cutter heads rather than on small utility tools.modeleng.

Common reversible knife sizes

These reversible carbide knives are often rectangular and available in sizes like:

• 14 × 14 × 2.0 mm, with 2 or 4 cutting edges depending on the design.

• 20 × 12 × 1.5 mm, often 2-edge reversible knives for woodworking tooling.

• 28 × 14 × 2 mm and similar sizes for jointers, planers, and cutter heads.
  

Suppliers also list custom lengths and bevels for different cutter heads, including knives intended for softwood, hardwood, MDF, and general woodworking.

Typical uses

• Planers and jointers.

• Grooving and rebate cutter heads.

• Shaper heads and face mills for wood.

• TCT changeable knife cutter heads for hardwood, softwood, and MDF.