Precision EDM Drilling

High-Speed Electrical Discharge Drilling

EDM Drilling (also known as hole poppers or fast hole drilling) uses a precision electrode tube—typically brass—to channel electrical sparks that erode conductive materials. Unlike traditional drilling, this process exerts no mechanical force, allowing for perfectly straight holes in even the hardest substrates.

At Punch Tools, our Joemars Super Drill JM325D utilizes advanced sparking circuits to maximize machining speed while maintaining ultra-high accuracy and excellent flushing power.

Pro Tip: This is the essential first step for creating start-holes for Wire EDM Machining.

Overcoming Difficult Geometry

Because EDM drilling is a non-contact process, it is the ideal method for adding small holes to inclined faces or irregular geometries where a standard drill bit would "walk" or snap.

• No Burr Entry/Exit: Clean edges regardless of hardness.
• Extreme Depth-to-Diameter: Capability far exceeding conventional bits.
• Zero Human Error: Fully automated precision.