Small Hole Drilling Electrical Discharge
Machining
At McWilliams Sales & Service, we offer manual and full CNC small hole electrical discharge machines. We also distribute unique Portable Tap Buster machines. McWilliams is your trusted source for electrical discharge machining resources and consumables.
What Is Small Hole Spark Erosion Drilling?
Electrical Discharge Machining (EDM), also known as spark erosion, is the process of removing conductive material from a workpiece through rapidly recurring current discharges between two electrodes. In small-hole electrical discharge machining, a small-diameter spinning electrode is used to produce holes in materials that would otherwise be impossible. Small hole EDMs are capable of producing burr-free holes with exacting precision.Small Hole EDM Features at a Glance
- Can use electrodes from .003-.156-inch diameter dependent on machine model and options
- Can EDM holes in any conductive material
- Can use tap water dependent upon conductivity
- Can use single-hole and multi-hole copper and brass electrodes
- Can be ordered with the optional (AEC) Automatic Electrode Changer for CNC EDM Models
- The Model SD1M, with a swinging/pivoting EDM Head, saves on expensive EDM tooling
Manual Small Hole Machines
Model SD1M
The Model SD1M EDM comes standard with a swinging/pivoting head. The EDM head can pivot at any angle between vertical to horizontal positions. This swinging/pivoting head creates a more efficient drilling process, helping save money on expensive EDM tooling. This machine can use electrodes from .003-.1575 inches in diameter.
Model DJ1612
The Model DJ1612 Small Hole EDM Machine is our 2nd generation basic, inexpensive EDM capable of drilling holes using .012-.118-inch diameter electrodes.
CNC Controlled Small Hole Machines
Models EDB-435 & EDB-640
CNC machines are computer-controlled electrical discharge machines. Both models are available with optional Automatic Electrode Changer Units (AEC) and come standard with LCD touchscreen monitors to input drilling programming and parameters. Optional dielectric fluid filtration units are also available. These Small Hole Drilling Machines can use electrodes from .003-.156-inch diameters without the optional AEC unit and from .012-.118-inch diameters when ordered with the optional AEC unit.
Portable Electrical Discharge Machines
Tap Buster / Broken Tap Remover
Also known as the EDM-DR, this unique EDM Machine can be directly transported to any location. This portability means you never need to remove and lose the positioning of your parts to remove a broken tap or drill.Tap Buster/ Broken Tap Remover machines use ordinary tap water as the dielectric. Its standard internal pump can use brass or copper single-hole or multi-hole electrodes from .039-.256-inch diameter. Tap Buster / Broken Tap Remover EDMs use 220VAC, 5A single-phase power. The optional 110-220VAC buck boost transformer allows you to plug into any 110VAC wall outlet in your facility.
McWilliams is Your Trusted Source for Precision Wire EDM Resources
McWilliams has supplied premium EDM resources for more than four decades. We distribute new and used wire cut EDMs, small hole drilling EDMs, and EDM consumables. We also provide a range of EDM services and support. If you want to buy or sell EDMs, McWilliams is your solution.
Contact Us to Order Small Hole Drilling Machines
Contact us to learn more about our manual and CNC-controlled small hole EDM drilling machines. You can also request a quote for pricing information.
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