Precision calibration for sinker and custom EDM systems. On-site or in-house — same-day response available across North America.
Over five decades of EDM expertise
Equipment serviced worldwide
Custom Engineered Solutions
When your EDM drifts out of spec, every part it produces becomes a liability. Our calibration service restores your machine to factory parameters — verifying electrical performance, servo response, and discharge consistency so you can run with confidence.
EDM Zap technicians have been calibrating sinker EDM equipment since 1971. We travel on-site across North America — often same-day or next-day — or you can ship components directly to our facility in Montgomery, IL for in-house service.
Centrally based in Chicago, our technicians are available same-day or next-day. Can't have us on-site? Ship your power supply or component to our Montgomery, IL facility for in-house diagnosis, calibration, and return shipping.

Our Products
High-performance generators engineered for stability, speed, and minimal electrode wear.
Learn More →Specialized configurations for simultaneous machining and maximum throughput.
Learn More →Purpose-built systems designed from the ground up for your specific manufacturing challenge.
Learn More →Precision tooling, filtration, and consumables to keep your machines running perfectly.
Learn More →We don't just build the machine — we engineer your entire process. From 5-minute cycle times down to 1 minute, we accelerate your full assembly line.
Learn More →How It Works
Call or email us. We'll assess your equipment, confirm availability, and schedule on-site or in-house service — often same-day or next-day.
Our technicians travel to your facility across North America. Alternatively, ship your power supply or component to our Montgomery, IL facility.
We run a full diagnostic, restore all parameters to spec, and make any necessary adjustments to power, servo, and discharge systems.
You receive a full calibration report documenting every measurement and adjustment made. Machine is tested and cleared for production.
Industries We Serve
Why EDM Zap?
At EDM Zap, we specialise in precision EDM solutions for manufacturers who can't afford downtime. Our engineering team brings decades of hands-on expertise to every project — from standard equipment to fully custom builds.
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Triax Cable and our new control platform
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Built to your exact spec and process
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Calibration, repair, and maintenance on demand
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Serving aerospace, medical, and energy sectors
What's Included
Full diagnostic of discharge voltage, current, and frequency against factory spec.
Verification of servo response, Z-axis positioning accuracy, and repeatability.
Detection and correction of abnormal DC arcing, unstable discharge, and power drift.
Dielectric fluid condition check, filtration system inspection, and flush verification.
Full documented report of all measurements, adjustments, and pass/fail status for your records.
Checking power levels, on/off timing, and voltage levels across all discharge circuits.
Our engineering team will respond within 24 hours.