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5 axis edm small hole drilling header graphic

Axis EDM Small Hole Drilling overview

EDM (Electrical Discharge Machining) small hole drilling is a specialized machining process used to create precise and small-diameter holes in various materials, including metals and hard alloys. This technique is particularly useful for applications requiring high accuracy and intricate designs.

Trinity EDM can provide small hole EDM drilling as part of our customers design or as pilot holes for our wire EDM process.  We can also utilize this process to remove broken taps from your previously machined parts.  Small hole EDM is a process in which electricity travels through a metallic electrode as small as .005" eroding away material as deionized water flushes away burned particles.  Like wire EDM, with small hole EDM drilling, no physical contact occurs between the electrode and the work piece.  The result is a very fine finish with extreme accuracy that requires no additional work for a smooth, straight, surface that is virtually burr free.  

  • Extremely deep, very small diameter holes  (.005”/.188” possible- We have completed .125” X 44” Through holes in 718 Inconel with better that .002” per ft straightness)
  • Blind holes  (.005”/.188” possible- We have completed .125”-.156” X 39” deep blind holes in 718 Inconel with better that .002” per ft straightness)
  • Pilot holes for wire EDM  
  • Broken taps 

How EDM Small Hole Drilling Works

HOW EDM SMALL HOLE DRILLING WORKS infographic 1
HOW EDM SMALL HOLE DRILLING WORKS infographic 2
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Applications of EDM Small Hole Drilling

  • Oil and Gas: Wire start holes for wire EDM profiles in tall parts typical in oil and gas
  • Tap removal: Easily remove broken taps in machined parts without thread damage
  • Aerospace: Creating cooling holes in turbine blades.
  • Medical Devices: Manufacturing intricate components for surgical instruments.
  • Automotive: Drilling fuel injector holes and other precision components.
  • Molds and Dies: Producing cooling channels in injection molds.

Advantages of EDM Small Hole Drilling

  • Precision: Capable of producing holes with diameters as small as 0.005”.
  • Material Versatility: Effective on hard materials that are difficult to machine using traditional methods.
  • Minimal Mechanical Stress: Reduces the risk of damaging the workpiece due to thermal effects.

Pros & Cons of EDM Small Hole Drilling

PROS OF EDM SMALL HOLE DRILLING infographic
CONS OF EDM SMALL HOLE DRILLING infographic

CONTACT US ABOUT EDM SMALL HOLE DRILLING

EDM small hole drilling is a valuable technique in industries where precision and material integrity are paramount. If you have specific applications or materials in mind, feel free to share, and we can provide more tailored information!

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Trinity EDM

226 Jared Dr, Broussard, LA 70518, USA

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