Full profile of a carbide drill cutting tool with measurement scale, shown before automated honing.

Before

Microscope close-up of a carbide drill cutting edge showing visible grind marks and a sharp burr prior to edge honing.

After

Close-up view of a honed carbide drill edge showing a smooth, refined cutting radius after automated tool edge preparation.

Objective

Improve tool performance and consistency by honing the cutting edges of solid carbide drills — strengthening the edge, reducing micro-chipping, and improving surface finish during machining.

IndustryCutting Tool, Machine Shop Applications
Part DescriptionDrill
Fabrication Method Cutter Ground
MaterialCarbide
Process TechnologyEdge Preparation/Honing, Multiple Methods
Equipment TypeDrag-Spindle Finisher, Dry Finishing

Solution

Bel Air developed an automated edge-honing process using the Vertical Drag Finisher to strengthen and refine the drill’s cutting edges. The engineered edge radius reduces the risk of chipping at high cutting speeds and improves cutting efficiency in tough materials.

The automated process:

  • Creates a controlled cutting-edge radius
  • Reduces micro-fractures from grinding
  • Improves tool life and consistency between tools
  • Minimizes cutting forces and burr formation during drilling
  • Eliminates manual finishing steps for higher production throughput

This solution provides a repeatable method for tool manufacturers seeking tighter quality control and better performance from precision carbide drills.

If you are unsure what equipment and media you require to achieve your desired surface finish, then send us your part, and we will evaluate it and provide you with a metrology report.