Services
Sinker EDM
Sinker EDM — also called plunge or ram EDM — shapes cavities by sinking a shaped electrode into the workpiece. It produces internal forms and blind features that no cutter can reach.
Where Sinker EDM fits
- Blind cavities, pockets and internal shapes
- Sharp internal corners and fine detail
- Features in hardened material
- Keyways, splines and profiles inside a part
Why it matters
Some of the most important features of a part are the ones you cannot see. Sinker EDM lets us hold their shape precisely, even in hardened steel, so the part works exactly as designed.
Share your drawing and we will tell you quickly how we would make it.
Benefits
The ProTool Advantage
Less downtime. Lower costs. Higher quality — the outcomes our customers count on.
Hidden Features, Held Precisely
Internal forms keep their exact shape, even deep inside a part.
Hardened Material
Shapes cut directly in hardened steel, with no cutter to wear or deflect.
Fine Detail
Sharp internal corners and crisp profiles that machining cannot produce.
Industries We Serve
Precision parts and services for the industries that can least afford downtime.
Why Choose
ProTool Company
Because you need reliable, high-impact components without the wait. Our game-changing proprietary regrinding offers unmatched blade life, the industry's fastest turnarounds, significant cost savings, and true OEM-level (or better) performance—all from one expert source.
Get Started
Request a Quote
Share your project specs with us today —whether for industry-leading regrinding, custom wear parts, or specialized machining — for a fast, competitive quote.