Tight-Tolerance Drilling Explained
Small vias demand sharp tooling, controlled stack height and drill-to-copper limits that ordinary boards never worry about.
Tooling and wear
Micro-drills dull fast; tool life is tracked per hit, not per lot.
Stack and registration
Tight registration needs rigid backing and careful entry material.
Hole to copper
Back-drilling and controlled depth manage stub in high-speed stacks.
Key Takeaways
Key Takeaways
- Micro-drill life is counted per hit.
- Rigid backing improves registration.
- Back-drilling tames high-speed stubs.
