Small Hole Drilling

Precision Holes Where Conventional Drilling Fails

Small hole EDM drilling uses a rotating tube electrode to burn precise holes through conductive materials. Unlike conventional drilling, there's no cutting force — which means you can drill through carbide, Inconel, and fully hardened tool steel without deflecting the hole or risking drill breakage in an expensive part.

Start Holes, Cooling Channels, and Precision Orifices

The most common use for small hole EDM is creating the start hole for a wire EDM cut — a precise, burr-free entry point that conventional methods can't reliably produce in hardened material. Beyond start holes, we drill cooling channels, injection nozzle passages, hydraulic orifices, and any other small-diameter feature in materials that would destroy a conventional drill bit.

Common Jobs We Run

• →Cooling channels through H13 and P20 mold steel
• →Start holes through carbide and hardened tool steel
• →Fuel injector and spray nozzle orifices in stainless steel
• →Hydraulic and pneumatic orifices in Inconel and titanium
• →Bearing and lubrication passages in hardened shafts and housings
• →Micro-holes in medical device and instrument components

No Drill Breakage. No Damaged Parts.

In hardened material, conventional drill bits break. A broken drill in a complex, expensive part is a costly problem — and sometimes an unrecoverable one. EDM small hole drilling eliminates that risk entirely. The process uses electrical discharge, not mechanical force, so there's nothing to break and nothing to deflect. The hole goes where the program says it goes.