CNC Sinker EDM O1 Tool Steel

CNC Sinker EDM O1 Tool Steel from VT machining delivers precision O1 Tool Steel parts made to your exact drawing. Sinker (die-sink) EDM burns a shaped electrode into metal to form precise cavities and blind features, with parameters tuned to O1 Tool Steel, which is wear-resistant and hardenable for tooling.

CNC Sinker EDM Capability for O1 Tool Steel

• Air/oil/water-hardening grades
• High wear resistance
• Hardenable to 58–64 HRC
• Tolerance to ±0.005 mm

Machining O1 Tool Steel with CNC Sinker EDM

O1 Tool Steel behaves predictably under CNC Sinker EDM once parameters are dialled in: machinability is machined in the annealed state, then hardened; carbide tooling preferred, and we tune the operation accordingly.

We hold reference parameters for this grade, so repeat orders of O1 Tool Steel run consistently from one batch to the next.

Design Tips for CNC Sinker EDM O1 Tool Steel

We are happy to suggest design tweaks that improve manufacturability. EDM suits sharp internal corners, thin ribs and hardened O1 Tool 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.

Why O1 Tool Steel?

O1 Tool Steel is chosen when a part needs what this grade offers — it is wear-resistant and hardenable for tooling. We confirm the grade and any temper or heat-treat condition with you before machining.

CNC Sinker EDM Tolerances & Surface Finish

EDM holds tolerances to roughly ±0.002–0.005 mm with no cutting force on the O1 Tool Steel part, producing fine, controlled surface textures and sharp internal corners impossible to mill.

Final tolerances are governed by the material's behaviour, wall thickness and overall stiffness. We give honest DFM feedback if a callout would be costly or better achieved another way.

Secondary Operations & Finishing

Finished O1 Tool Steel parts can move straight into secondary operations under one roof. Typical add-ons are deburring, passivation, anodising, plating, blasting, polishing and laser marking. We coordinate the whole chain so you receive complete, inspection-ready parts.

CNC Sinker EDM Quality & Inspection

We control quality throughout the process, not just at the end. In-process checks plus final inspection — including CMM where specified — keep every O1 Tool Steel part to print. Inspection reports, material certificates and first-article documentation can be supplied on request.

Applications of CNC Sinker EDM O1 Tool Steel

Customers order CNC Sinker EDM O1 Tool Steel components for everything from instrumentation to structural and functional assemblies. Whether you need a single prototype or recurring production volume, the same process discipline applies.

How to Order CNC Sinker EDM O1 Tool Steel

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.

O1 Tool Steel in Other Processes

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