CNC EDM Drilling Steel is a core capability at VT machining. We combine controlled EDM machining with material-aware setup for Steel — an alloy that is strong, economical, widely available carbon/alloy grades — to produce parts that meet your specification first time.
CNC EDM Drilling Capability for Steel
- Ø0.2–3 mm holes
- Deep aspect ratios
- Hardened-metal drilling
- Angled hole capability
How CNC EDM Drilling Steel Works
Material is removed from the Steel workpiece by controlled electrical discharges across a dielectric gap, with no mechanical contact. Flushing, on/off pulse timing and electrode/wire feed are set to balance speed against surface finish.
We start from your supplied geometry and tolerance scheme. The setup is designed to minimise re-clamping, which protects positional accuracy across features. A first article is verified against the drawing before the balance of the batch is released.
Working with Steel
Steel is strong, economical, widely available carbon/alloy grades. We translate those properties into a process plan: the right tooling, speeds, feeds and fixturing for the alloy.
Where the grade, temper or heat-treat condition matters to performance, we confirm it with you and can supply material certificates. Material is procured to recognised standards for consistent, repeatable results.
CNC EDM Drilling Tolerances & Surface Finish
EDM holds tolerances to roughly ±0.002–0.005 mm with no cutting force on the Steel part, producing fine, controlled surface textures and sharp internal corners impossible to mill.
The tightest tolerances are reserved for the features your drawing flags as critical. Share your tolerance scheme and we will confirm what is realistic before quoting.
CNC EDM Drilling Quality & Inspection
Quality is built in, not inspected on. We monitor key features during the run and confirm them at final inspection, with CMM verification available for tight tolerances. We provide the inspection and traceability records your quality system requires.
Secondary Operations & Finishing
Most Steel parts need some finishing, which we manage in-house or through vetted partners. Options include deburring and edge-breaking, heat treatment, surface grinding, polishing, and plating or anodising for corrosion resistance and appearance. Give us the finished-part requirement and we will sequence every operation correctly.
Design Tips for CNC EDM Drilling Steel
Small design adjustments often cut cost and lead time. EDM suits sharp internal corners, thin ribs and hardened Steel that cannot be milled; allowing a small corner radius where possible speeds the cut. If you send your model early, we will return practical DFM feedback before you commit to production.
Applications of CNC EDM Drilling Steel
Steel parts made this way are found throughout aerospace, medical, automotive, electronics and industrial equipment. Prototype, bridge and production volumes are all welcome.
How to Order CNC EDM Drilling Steel
Starting your project takes one email. Send your CAD or 2D drawing, the Steel grade and condition, the quantity and any finish or inspection requirements. We respond quickly with price, lead time and any DFM notes, in clear English.
Other Metals for CNC EDM Drilling
Other Processes for Steel
Need CNC EDM Drilling Steel for your project? Send your drawing and quantity for a fast quotation.
Request a QuoteFrequently Asked Questions
Does CNC EDM Drilling Steel require dedicated tooling?
Wire EDM needs no shaped tooling; sinker EDM uses a shaped electrode we produce in-house for your cavity.
How clean are the edges produced by CNC EDM Drilling on Steel?
Machined Steel edges are clean and to specification; edge-break or deburring is added when your drawing calls for it.
What surface finish is achievable on Steel with CNC EDM Drilling?
Surface finish on Steel is controlled to your specification; we confirm the achievable Ra against your callout.
What tolerances can you hold for CNC EDM Drilling Steel?
Achievable tolerances for Steel EDM machining depend on the alloy, geometry and feature size. EDM holds tolerances to around ±0.002 mm with no cutting force on the part. Exact figures are confirmed against your drawing callouts.