SpeTool 1/4" Corn Tooth End Mill (PCB/Carbon Fiber)
End Mill Corn Tooth

SpeTool 1/4" Corn Tooth End Mill (PCB/Carbon Fiber)

SpeTool

$11.99

Overview

The corn tooth end mill (also called a diamond-cut or chip-breaker) features a serrated cutting edge that breaks chips into fine dust rather than long strands. This is critical when cutting carbon fiber and fiberglass, where long fiber strands can wrap around the bit and cause delamination. Also excellent for PCB routing and G10 cutting.

Best for

Cutting carbon fiber, fiberglass, and composite materials cleanly.

Specifications

Shank Diameter

1/4"

Cutting Diameter

1/4"

Flute Count

4

Material

Solid Carbide

Coating

Uncoated

Type

Corn Tooth

Material Compatibility

Carbon fiber Fiberglass PCB Composites G10

Not rated for aluminum. Use a ZrN or DLC coated single-flute end mill for aluminum cutting.

Pros

  • Essential for carbon fiber and fiberglass
  • Prevents fiber pull-out and delamination
  • Clean edges on composites
  • Also great for PCB routing

Cons

  • Not for wood or metal
  • Specialized use limits versatility
  • Creates fine dust - requires good extraction
  • Rougher finish than standard end mills