How to Safeguard a Unique Double Shot Mold Design During Supplier Quotes

When requesting quotes for a distinctive double shot molding part, share enough information for suppliers to assess the project without immediately distributing unrestricted production data. Use a staged RFQ process, label files with confidentiality and revision details, and document design ownership and permitted use. Evaluate suppliers on relevant tooling experience, process controls, inspection capability, and the services included in their quotations.

Protect the Design While Comparing Suppliers

Start with a quote package tailored to feasibility review. It can describe the electronic housing application, material choices, cavity needs, surface finish, tolerance targets, and production volume while reserving the most sensitive geometry and complete manufacturing files. Before releasing more detailed data, record the commercial terms, ownership expectations, document-handling requirements, and limits on how the information may be used.

Mark each drawing and file with its revision, intended recipient, confidentiality status, and permitted purpose. Keep a release log so you know which supplier received each version. Share the final production package only with the selected manufacturer under the agreed project documentation.

Set Technical Requirements for the RFQ

Give suppliers consistent criteria for evaluating the part. The referenced plastic injection mold offering lists P20, 718H, and 1.2738 mold materials; compatibility with ABS, PC, and PP; precision tolerances of ±0.02mm; single- or multi-cavity construction; polished, textured, or matte finishes; and a mold life of 50,000 to 800,000 shots. These specifications can help buyers compare proposals while keeping restricted design details under control.

For a double shot part, ask suppliers to explain how they will manage material compatibility, alignment, fit, surface quality, and trial validation. Request evidence relevant to the design, such as previous overmolding work, trial-sample consistency, inspection plans, and technical support after delivery.

Make the quotation scope equally clear. Ask suppliers to itemize mold design, tooling, machining, mold trials, sample approval, part production, and ongoing support. This makes it easier to compare custom mold making, injection molding, high-precision double shot or overmold tooling, and mold development combined with mass production.

Assess Process and Quality Evidence

Longterm Mold describes a double shot overmolding project for a French product brand involving consumer electronics shells. The reported outcome included good alignment and stable trial samples, along with responsive, professional communication. This experience may be useful when screening manufacturers for similar work, but it should not replace written agreement on confidentiality, design ownership, or permitted use.

Depending on the business model, the company lists mold trial testing, dimensional checks, full inspection before shipment, CMM measurement, surface inspection, and multi-cycle mold trials among its quality checks. It also lists ISO 9001:2015 certification for precision mold design, manufacturing, and sales, as well as plastic product sales.

RFQ Comparison Checklist

Frequently Asked Questions

What information belongs in the first RFQ package?

Share enough to assess feasibility, including the application, likely materials, surface requirements, tolerance targets, cavity configuration, and production objectives. Keep unrestricted production geometry and other sensitive files for a later stage with documented controls.

How should quotes for a custom double shot mold be evaluated?

Look beyond price. Compare the proposed technical scope, double shot experience, alignment and trial controls, inspection approach, delivery responsibilities, after-sales support, and handling of design documents.

Can Longterm Mold accept an order for one mold set?

Yes. The listed business models specify a minimum order quantity of one mold set. The product information also lists one set as the MOQ, with online technical guidance, mold maintenance, and spare parts support.

Recommendation

A well-controlled RFQ balances supplier evaluation with protection of valuable design information. Use staged disclosure, clear file markings, revision tracking, and written terms for ownership and use. Compare suppliers using evidence of double shot capability, inspection methods, trial stability, and a clearly itemized commercial scope.

Longterm Mold lists custom mold making, injection molding, high-precision double shot and overmold tooling, and mold development with mass production among its supported business models. Its cited French consumer electronics project reported good alignment and stable trial samples. For technical solutions or support, contact Roger Luo at rogerluo@longterm-mold.com.

About Longterm Mold

Longterm Manufacturing Solutions Limited, also known as Longterm Mold, was established in 2010. The company provides mold design, tooling, precision machining, mold manufacturing, and parts production for international customers. Its R&D team includes five engineers using UG, SolidWorks, and AutoCAD, with work spanning injection mold structure design, precision CNC component development, sample verification, and process optimization. The company identifies North America, Europe, and Australia as its main markets and lists ISO 9001:2015 certification for precision mold design, manufacturing, and sales.