Custom cutting tools are used when a standard catalog geometry cannot match the part drawing, reach, tolerance, chip control, clamping, or machine condition. This category includes custom PCD, CBN, carbide, reaming, drilling, grooving, boring, milling, and workholding-related tooling for drawing-based RFQs.
Custom needTypical data requiredReview point
Special size or profileDrawing, tolerance, edge radius, feature depthCan it be ground, brazed, or assembled reliably?
Long reach or restricted accessHolder, spindle, clearance, overhangWill rigidity support the proposed geometry?
Material-specific toolMaterial, hardness, coating, coolant, failure modeWhich tool material and edge preparation fit the job?
Start with the drawing, workpiece material, current process, target result, annual volume, and any failed tool photos. Send these details through Full RFQ.
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HEYI reviews custom PCD, CBN and carbide tools from drawings, current-tool samples and machining data. A useful request defines the workpiece material, operation, geometry and interface, machine and workholding condition, tolerance and surface-finish target, current problem, required result, quantity and timing. Feasibility and the final tool specification are confirmed only after technical review.
| Review stage | What is checked | Useful buyer input |
|---|---|---|
| Application and material | Workpiece, operation, interrupted or continuous condition and required result. | Material grade, hardness when relevant, operation, allowance and current issue. |
| Geometry and interface | Cutting profile, dimensions, reach, shank or holder connection and clearance. | Drawing or CAD, current-tool sample, critical dimensions and machine interface. |
| Setup and process condition | Machine, workholding, coolant, rigidity and preceding operation. | Machine type, clamping, coolant method, existing hole or surface condition and known parameters. |
| Inspection and acceptance | Critical dimensions, tolerance, finish and practical verification method. | Marked critical features, tolerance, surface-finish target and inspection requirement. |
Application review, tool preparation, edge generation, precision grinding, magnified inspection and suitable reconditioning review are completed in the factory. The exact route depends on the tool construction, workpiece material, geometry, operation and required result.
Send the drawing or current tool, workpiece material, operation, critical geometry and interface, machine and workholding, allowance or existing-hole condition, coolant condition, tolerance, finish target, current problem, quantity and timing.
HEYI can review combined, step and profile-tool concepts when each feature, dimension, sequence, clearance and machine condition is defined. Feasibility is confirmed only after the complete drawing and application are checked.
A current-tool sample can support the review, but the application, critical dimensions, interface, material and required result are still needed. Any missing or uncertain specification should be confirmed before the final tool is defined.
PCD is generally reviewed for abrasive non-ferrous materials, composites and graphite. CBN or PCBN is generally reviewed for selected hardened ferrous materials and cast iron. Carbide is a broad starting point for many other operations. The final choice depends on the workpiece, cut condition, rigidity and required result.
Send the drawing or CAD or current tool, workpiece material, operation, critical geometry and interface, machine and workholding, allowance or existing-hole condition, coolant condition, tolerance, finish target, current problem, required result, quantity and timing.
