Precision CNC Drilling Services

Drilling creates the initial hole. Reaming is a secondary finishing process that enlarges the hole slightly to achieve a much tighter diameter tolerance and a smoother internal surface.

Yes. For hardened materials, we don't use standard cutting taps. Instead, we utilize stronger "form taps" or a process called "thread milling" to create precise and durable threads.

Our standard positional tolerance for CNC drilled holes is ±0.02mm. Tighter tolerances can often be achieved, so please specify your critical requirements on your drawing for our engineering review.

As a general rule, we can reliably drill to a depth of 10 times the hole's diameter (10:1). For specific applications, using advanced "peck drilling" cycles and high-pressure coolant, we can often achieve deeper ratios. We recommend consulting with us for any deep-hole requirements.

Yes. Using our 4-axis and 5-axis CNC machines, we can accurately drill holes at various angles relative to the primary surfaces. This ensures the hole is perfectly perpendicular to the local surface, which is critical for many advanced applications.

For maximum clarity, please use hole callouts that specify all features in one note (e.g., diameter, depth, counterbore size, thread type). Always dimension hole locations from clear datums (A, B, C). A well-defined drawing prevents errors and speeds up quoting. If you're unsure, feel free to send us your preliminary design for DfM (Design for Manufacturing) feedback.