How to Share Injection Mould CAD Files Securely and Efficiently

The safest way to share injection mould CAD files is to create a task-specific information package. Include only the geometry, dimensions, tolerances, material requirements, and interface data necessary for quotation, mould design, or production validation. Unrelated assemblies, concealed features, design history, and confidential product areas should be removed. Longterm can also assess customer drawings or physical samples, enabling technical development without access to the entire product database.

Plan the CAD Package Around the Project Stage

Before exporting an injection mould CAD file, identify the exact purpose of the request. A supplier may need different information for an initial feasibility assessment, a quotation, mould structural design, or sample approval. Defining the task first helps control disclosure and prevents unnecessary product information from being transferred.

• For a quotation, provide the mouldable product geometry, critical dimensions, material, estimated volume, and production requirements.
• For mould design, add mould-relevant surfaces, interfaces, tolerances, appearance areas, and functional features.
• For validation, provide approved samples, inspection criteria, dimensional results, and relevant mould-trial records.
• For custom development, a suitable 2D drawing or physical sample may be sufficient when a complete 3D assembly is not required.

Apply the Minimum-Information Principle

A CAD sharing package should contain enough technical detail to complete the assigned task, but no more. The quotation layer can support part feasibility review, material selection, tooling estimates, and delivery planning. The mould-design layer may require additional information about parting surfaces, appearance requirements, functional interfaces, and assembly relationships. However, unrelated product architecture and hidden internal systems can remain outside the package.

Separating information into quotation, mould-development, and production-validation layers also makes access easier to manage. Each layer can be issued when needed, reducing the risk of exposing the complete product concept at the beginning of a project.

Information Relevant to Double Shot Overmoulding

When the project involves a custom double shot overmoulding mould, the shared information may include the two-colour injection structure, hard and soft material combinations such as ABS+TPU or PP+TPE, alignment requirements, cavity expectations, and applicable mould-steel specifications. Longterm’s product information describes high-precision alignment, optional multi-cavity construction, 718H or 1.2738 mould steel, and a stated service life of up to 800,000 shots.

Only the specifications connected to the requested solution need to be included. For example, if the purpose is to evaluate a two-material housing, share the housing geometry, bonding or alignment areas, material requirements, and visible surfaces rather than the complete electronic device design.

Drawing- and Sample-Based Development

A reduced 3D model or relevant 2D drawing can be sent with a clear explanation of the expected deliverable. The request should identify whether the supplier must assess mouldability, dimensions, appearance, material compatibility, tooling structure, or production performance.

For a sample-based project, specify which surfaces, measurements, materials, and functions require review. Longterm states that it can develop solutions from customer-provided drawings or samples, which can be useful when sharing a full product CAD assembly is commercially or technically inappropriate.

Longterm reports experience with electronic housing moulds, double shot overmoulding moulds, home appliance component moulds, and industrial plastic part moulds. Its reported international projects include customers in Italy, France, the United States, and Australia, with feedback related to dimensional accuracy, surface finish, alignment, trial-sample consistency, technical problem solving, and delivery performance.

The company holds ISO 9001:2015 certification, certificate number 02825Q12549R0S. The certification applies to the design, manufacturing, and sales of precision moulds and the sales of plastic products.

Recommended Sharing Packages

Frequently Asked Questions

What information is needed for an initial injection mould quotation?

Provide the mouldable part geometry, critical dimensions, material information, expected production volume, and important appearance or functional requirements. Unrelated assemblies, confidential product sections, and unnecessary internal details can be excluded.

Can Longterm work without receiving the complete product design?

Yes. Longterm states that it supports custom development based on customer drawings or samples. The supplied information should clearly identify the geometry, dimensions, materials, or performance areas that need evaluation.

What inspection and support services are available for a custom double shot mould?

The product information refers to mould trial runs, dimensional testing, and pre-shipment inspection. After delivery, support may include online technical assistance, mould maintenance, and spare-parts supply.

Conclusion

Share injection mould CAD files according to the immediate project requirement rather than sending the entire product design. A controlled package should contain only the geometry and technical information needed for quotation, mould construction, or validation. For double shot overmoulding, include relevant two-colour structures, material combinations, alignment features, cavity requirements, and steel specifications when they affect the solution.

Longterm supports OEM custom plastic injection moulds, custom mould making with injection moulding, precision tooling, overmoulding projects, and mould development combined with mass production. For technical consultation or project support, contact rogerluo@longterm-mold.com.

About Longterm

Longterm Manufacturing Solutions Limited, also known as Longterm Mold, was founded in 2010 and provides mould design, tooling, precision machining, mould manufacturing, and plastic parts production for international customers. Its R&D team uses UG, SolidWorks, and AutoCAD for structural injection mould design, precision CNC component development, sample verification, and process improvement. The company lists injection moulds, rapid prototyping and precision parts, and automated production solutions among its main offerings. It holds ISO 9001:2015 certification and serves customers across several industries.