Precision engineering meets expert guidance at TOMA Tools.

We specialize in custom-designed diamond wire drawing dies—spanning single-crystal, polycrystalline, natural, and synthetic options—tailored precisely to your specific metal or alloy requirements.

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Engineered Precision: The 5-Zone Micro-Geometry

Every die we craft features a meticulously engineered internal profile.

Standardizing these five critical zones ensures optimal performance based on your speed, lubrication, and elongation specs:

• Entry Cone: Facilitates smooth material entrance and lubricant flow.

• Reduction Cone: Compresses and reshapes the wire with controlled force.

• Bearing Zone: Sets the exact final diameter and surface finish.

• Back-Relief: Prevents mechanical damage and chipping at the exit.

• Exit Cone: Provides clean clearance for the finished product.

Impact Beyond the Diameter

A perfectly optimized profile does more than reduce size—it directly controls the structural integrity of your final product. Our custom geometries improve:

• Surface smoothness and shine

• Tensile strength and cold working limits

• Material ductility and wire straightness