CNC and EDM Machining for Mold Components and Precision Parts
Cavity Mold provides CNC and EDM machining for injection mold components, precision metal parts, fixtures, prototypes, and technical components. The machining workflow supports mold cores, cavities, inserts, slides, lifters, electrodes, and other parts used in automotive, electronics, industrial, and OEM projects.
Customers can send a 3D CAD file, 2D drawing, material information, and critical requirements for a preliminary machining review. The team can then discuss process selection, datum and tolerance requirements, surface finish, inspection needs, and how the part will fit into the mold or assembly.
CNC Machining for Mold Components and Precision Parts
CNC machining scope includes CNC milling, turning or mill-turning, and the multi-axis work listed by Cavity Mold. These processes can be used for mold bases, cores, cavities, inserts, fixtures, and complex metal components where tool access, feature detail, and assembly fit must be considered together.
Process planning depends on the geometry, material, tolerance, surface finish, quantity, and inspection requirement. The objective is to select a practical sequence that keeps important features accessible for machining and verification.
Wire EDM and Sinker EDM
EDM is useful for features that are difficult to produce efficiently with conventional cutting tools. Cavity Mold lists wire-cut EDM and sinker, plunger, or ram EDM among its machining capabilities.
- Wire EDM: suitable for through profiles, inserts, punches, and other detailed conductive components.
- Sinker or ram EDM: useful for deep ribs, sharp internal details, small features, and difficult-to-machine geometries when an electrode-based process is appropriate.
- Electrode work: electrode geometry, datum references, burn requirements, and inspection points should be agreed with the customer when EDM details affect the finished component.
EDM selection depends on the material, geometry, required finish, feature depth, and the way the component will be assembled into the mold.
Materials and Secondary Finishing
The current machining capability information lists aluminum, brass, H13, P20, beryllium copper, and stainless steel. Material selection should reflect wear, corrosion risk, polish requirements, resin behavior, production volume, and the application of the part.
Depending on the project scope, secondary processes may include surface grinding, deburring, polishing, nitriding, laser marking, vibratory finishing, and other finishing operations. The quotation should identify which processes are performed in-house and which are coordinated through a qualified outside processor.
Machining Quality and Inspection Planning
A reliable machining result starts with a review of the drawing and CAD model. The review can identify datums, critical dimensions, tolerance relationships, surface-finish requirements, inspection points, and features that must match another mold component or assembly.
- Drawing and CAD review before process planning
- Datum, tolerance, and feature-sequence discussion
- Dimensional inspection against the approved requirements
- Surface-finish review for polished, textured, or functional areas
- Part matching, fitting, and assembly checks where the component works with a core, cavity, insert, slide, lifter, or electrode
No single tolerance applies to every process or material. The achievable result should be reviewed against the part geometry, machine process, material, surface requirement, and inspection method for the specific component.
Machining Workflow
- Review the CAD files, drawings, material, quantity, and requirements.
- Plan datums, workholding, machining sequence, EDM details, and inspection points.
- Prepare the specified material and machining setup.
- Complete CNC, EDM, grinding, and agreed secondary processes.
- Inspect critical dimensions, surfaces, and assembly interfaces.
- Pack and deliver the approved components or continue into mold assembly as required.
Use the form to send your machining requirements for a preliminary review. Please include the drawing, CAD file, material, critical tolerances, surface finish, quantity, and target timing.
Machining Workflow, Finishing and Customer Inputs
What to Send for a Machining Review
For a practical review, send:
- 3D CAD file and 2D drawing or PDF
- Material, hardness, and any heat-treatment information
- Critical tolerances, datums, and inspection requirements
- Surface-finish or polishing requirements
- Quantity, expected repeat requirements, and target delivery date
- Assembly information showing how the component fits with other parts
Machining Questions
What machining processes are available?
The current capability list includes CNC milling, turning or mill-turning, wire EDM, sinker or ram EDM, grinding, and selected secondary finishing processes.
Can Cavity Mold machine mold inserts and cores?
Yes. The page is focused on machining mold components such as cores, cavities, inserts, slides, lifters, and electrodes, subject to the drawing, material, geometry, and inspection requirements.
What CAD formats can be reviewed?
The existing file-format information lists STEP, IGES, DWG/DXF, PDF, SolidWorks, Pro/ENGINEER, and Parasolid X_T. Confirm unusual formats before sending a final package.
Can Cavity Mold support prototype quantities?
Prototype machining can be discussed when the geometry, material, quantity, and inspection requirements are suitable for the project.
How are tolerances and surface finishes handled?
They are reviewed from the drawing and CAD model, then connected to the machining process, datum plan, inspection method, and assembly requirement for the specific component.
Send one STEP file, drawing, or part photo through the Contact page for a preliminary machining review. You can also review our tooling engineering, mold making, and plastic mold projects.