How to Get an Accurate Quote for Custom Double Shot Molding Tooling

A detailed request for quotation helps a tooling supplier estimate the structure, cost, validation work, and delivery schedule for a custom double shot mold. Share the part design or a physical sample, the two materials and their overmolding relationship, cavity needs, mold-life target, finish requirements, inspection plan, production volume, and required delivery date.

Information to Prepare Before Requesting a Quote

Start with the part definition. Include a product drawing and 3D data if available, or provide a sample. Mark critical dimensions, surface areas, parting requirements, and how the first-shot component fits with the second-shot material. These details help the supplier evaluate the mold layout and define how trial parts will be checked.

Next, describe the material combination and tooling preferences. Longterm Mold's stated options include S50C, P20, and 1.2738 for mold bases; H13 and 718H mold steel; single- or multi-cavity construction; SPI or VDI surface finishes; and an optional hot runner. Specify the expected mold life as well: the listed range is 50,000 to 1,000,000 shots.

Align Validation and Timing with Production Needs

Clarify the required quality checks before the supplier prepares its offer. Depending on the project, these may include incoming material inspection (IQC), mold trials, dimensional checks, CMM measurement, surface inspection, full inspection before shipment, and trials across multiple molding cycles. Identify which features need recorded results and how sample approval will be handled.

Give tooling delivery and production timing as separate requirements. Longterm Mold lists 35–45 working days for complex, high-precision molds, including double shot and overmolding projects. Its mold-development-and-production model lists 25–35 days for mold delivery, followed by 7–15 days of mass production after samples are approved.

Project Scope and Supplier Capabilities

Include the intended application, order quantity, destination market, and target delivery date. Applications such as consumer electronics housings, home-appliance parts, and industrial equipment housings can involve different dimensional, cosmetic, and validation needs. A clear brief also helps distinguish a tooling-only order from a project that includes injection molding and ongoing production.

Longterm Mold reports double shot overmolding experience on a consumer electronics shell for a French product brand, with good alignment and stable trial samples. The company also describes work involving electronic housings, home-appliance components, and industrial equipment housings. Its ISO 9001:2015 certification covers the design, manufacture, and sale of precision molds and the sale of plastic products.

Quotation Inputs and Service Options

Frequently Asked Questions

What files are useful for a double shot tooling quote?

Send a part drawing and 3D design files when available, or provide a physical sample. Include both material specifications, details of the two-shot interface, critical dimensions, surface expectations, and the sample-approval process.

How should cavity count and mold life be communicated?

State whether you need a single- or multi-cavity mold and provide the target number of shots. The listed tooling options cover mold life from 50,000 to 1,000,000 shots.

Which quality checks should the quotation cover?

Specify the checks relevant to your part, such as mold trials, dimensional or CMM inspection, surface review, sample confirmation, or full inspection before shipment. Agree on the required records and approval stages before the quote is finalized.

Requesting a More Useful Tooling Quote

The more clearly a request defines the part, material combination, mold configuration, service-life target, finish, inspection scope, production volume, and schedule, the more accurately a supplier can plan and price the work. Longterm Mold provides custom mold making, precision double shot and overmold tooling, and mold development with plastic injection production. For technical details or project support, contact rogerluo@longterm-mold.com.

About Longterm Mold

Longterm Manufacturing Solutions Limited, operating as Longterm Mold, was established in 2010. Its services include mold design, tooling, precision machining, mold manufacturing, and parts production for international customers. The company reports a team of 5 R&D engineers using UG, SolidWorks, and AutoCAD, and capacity to develop 10–15 new products monthly with 3-axis and 5-axis CNC machining systems. Its main markets are North America, Europe, and Australia. Longterm Mold holds ISO 9001:2015 certification and serves customers across multiple industries.