CNC EDM Drilling

CNC EDM Drilling at VT machining covers a broad range of metals and grades, each processed to your drawing with parameters tuned to the alloy.

Fast-hole EDM drilling produces small, deep holes in hard metals, including starter holes for wire EDM. We quote from your files, give honest DFM feedback up front, and back each batch with dimensional inspection.

Typical tolerance±0.002 mm
Surface finishVDI-graded texture
Quantities1 prototype → 100k+
Quote turnaroundUsually < 1 business day
CNC EDM Drilling at VT machining — CNC precision machining services
CNC EDM Drilling — in-house at VT machining

CNC EDM Drilling Capability at a Glance

  • Ø0.2–3 mm holes
  • Deep aspect ratios
  • Hardened-metal drilling
  • Angled hole capability
100% Free tool · No sign-up · Instant 3D

Design your CNC EDM Drilling part online — free 3D + 2D drawing builder

No CAD licence, no sign-up, no cost. Set your metal, dimensions and features in the browser, see the part update live in 3D, switch to 2D to add dimensions and tolerances, then send the drawing straight to our cnc edm drilling team for a quotation.

  • Live 3D preview — rotate, zoom and explode the model as you type
  • Built-in 2D drawing sheet with dimensions, tolerances and notes
  • Download the preview or send it with your RFQ in one click
  • Free to use, unlimited revisions, nothing to install
VT CNC Machining 3D
Wire EDM Builder Configure wire EDM cut metal parts: precision profiles, openings, slots and fine features cut in hardened or conductive metals with no cutting force. Every builder includes the Freeform Corner & Region Editor: cut or add material of any shape directly on the 3D model, then submit an RFQ. This tool is for visual configuration only. Final dimensions, tolerances, materials, coatings, and manufacturability will be reviewed from your drawing or specification.
3D PART PREVIEW Visual Specification

Wire EDM Builder

Interactive visual preview for custom CNC machining configuration.

SP SPEC SUMMARY:
Import Code (One-Click Recall)

Save this code before you leave — it is the only way to recall this exact model. If you lose it, your configuration cannot be restored.

SUBMIT RFQ — ENGINEERING REVIEW Your current 3D configuration and specification summary are attached automatically. Attach a drawing if you have one.
Arithmetic verification image

FREQUENTLY ASKED QUESTIONS
When should I choose wire EDM over milling or laser cutting?

Wire EDM cuts hardened and conductive metals with no cutting force, holding tight tolerance on fine internal profiles, sharp corners and thick sections that lasers and cutters struggle with. Sinker EDM and EDM drilling are also available.

What accuracy can wire EDM hold?

Typical wire EDM tolerance is +/- 0.005 mm with excellent edge quality and no burrs, in tool steel, carbide, titanium and other conductive metals.

Prefer the full-screen version, or need a different process? Open the full Free 3D + 2D Builder

What Is CNC EDM Drilling?

CNC EDM Drilling removes metal through controlled electrical discharges between an electrode (or wire) and the workpiece across a dielectric gap. There is no mechanical cutting force, so hardened tool steel, carbide and superalloys can be cut to sharp internal corners and very tight tolerances.

At VT machining the process runs under full CNC control on calibrated equipment. In practice, that means this: Fast-hole EDM drilling produces small, deep holes in hard metals, including starter holes for wire EDM. If you do not have a CAD file yet, the free 3D + 2D builder on this page will produce a drawing we can quote from.

How CNC EDM Drilling Works at VT machining

Material is removed from the metal 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.

Programming is driven directly by your 3D model or print. Work-holding, tool selection and the cutting strategy are planned around the critical features and the material before the first chip is cut. First-off inspection confirms the process is centred before production continues.

  1. 1

    Send your drawing

    CAD model, PDF print — or a drawing you build free on this page. We reply with feasibility, price and lead time.

  2. 2

    Electrode / wire path programming

    Pulse timing, flushing and offsets are set to balance speed against surface finish.

  3. 3

    CNC EDM Drilling run

    First article is verified against the print before the balance of the batch is released.

  4. 4

    Inspection & dispatch

    In-process checks plus final inspection, with CMM reports, mill certs and FAIR on request.

CNC EDM Drilling Tolerances & Surface Finish

EDM holds tolerances to roughly ±0.002–0.005 mm with no cutting force on the metal part, producing fine, controlled surface textures and sharp internal corners impossible to mill.

Exact achievable figures depend on the alloy, the feature size and the part geometry. Tell us which dimensions are critical and we will advise feasibility up front.

CNC EDM Drilling — capability summary
Work envelopeUp to 500 × 350 × 250 mm
Wire diameter0.1–0.3 mm
Tolerance±0.002–0.005 mm
Corner radiusFrom 0.05 mm internal
MaterialsHardened steel, carbide, Inconel, titanium
Lead timePrototypes 5–10 days · production 10–20 days
DocumentationDimensional report, material certificate, FAIR on request

Figures are typical in-house capability. Send your drawing and we will confirm what is achievable for your specific part.

CNC EDM Drilling by Metal — Choose Your Material

Select the alloy you are working in to see material-specific capability, design guidance and applications.

Design Tips for CNC EDM Drilling

A few design choices make a real difference to cost and quality. EDM suits sharp internal corners, thin ribs and hardened metal 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.

Secondary Operations & Finishing

We complete metal components with the secondary steps your drawing calls for. We arrange heat treatment, surface treatment, marking and assembly as needed. Tell us the final spec and we will plan the full route so parts arrive ready to use.

CNC EDM Drilling Quality & Inspection

Consistent quality comes from disciplined process control. Critical dimensions on metal parts are checked in-process and verified at final inspection using calibrated instruments and, where required, CMM measurement. Full documentation — dimensional reports, mill certs, FAIR — is available when your programme needs it.

Industries That Order CNC EDM Drilling

CNC EDM Drilling parts made by VT machining go into the sectors below. Each page lists the typical components, preferred alloys and the tolerance expectations for that industry.

CNC EDM Drilling in the Shop

Related EDM Processes

Other CNC Services

How to Order CNC EDM Drilling

Getting a quote is simple. Share your model, the material grade, your quantity and target tolerances. You receive a clear quotation with lead time and honest manufacturability feedback.

Have a drawing ready? Send it with your quantity and material for a quotation, usually within one business day.

Request a Quote

Frequently Asked Questions

Can VT machining make custom parts to my drawing?

Yes. CNC EDM Drilling is made to order from your CAD/2D drawing. Share your geometry, material grade, tolerance and quantity and we will confirm feasibility, lead time and pricing.

What surface finish is achievable on with CNC EDM Drilling?

Surface finish on the part is controlled to your specification; we confirm the achievable Ra against your callout.

Does CNC EDM Drilling require dedicated tooling?

Wire EDM needs no shaped tooling; sinker EDM uses a shaped electrode we produce in-house for your cavity.

What tolerances can you hold for CNC EDM Drilling?

Achievable tolerances for CNC EDM Drilling 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.