Understanding Setup, Color-Change, and Scrap Costs in Double Shot Molding

What Can Affect the Cost of Double Shot Molding?

Double shot molding may involve expenses related to tooling setup, material or color changes, and production scrap. However, the available product information does not list separate charges for these items or provide a defined scrap percentage. The confirmed cost drivers include the two-color injection design, material compatibility, precision alignment, optional cavity configuration, mold steel, inspection procedures, maintenance, and the selected production arrangement.

Key Cost Considerations

• The custom overmolding process supports hard-and-soft material combinations such as ABS with TPU and PP with TPE.
• Setup work and color-change requirements should be reviewed during the engineering stage because no individual fees or processing rates are specified.
• Scrap risk can be evaluated through mold trials, dimensional checks, pre-shipment inspection, and sample approval, although no standard scrap rate is provided.
• The tooling can be used for consumer electronics housings and household appliance parts. The stated minimum order quantity is one set, with Europe, America, and Australia identified as export markets.

Tooling Design and Production Principles

The mold configuration is intended for two-color injection and can accommodate combinations of rigid and flexible materials, including ABS plus TPU or PP plus TPE. Accurate alignment is required to maintain the relationship between the two injected materials, while a multi-cavity layout is available as an option. These design decisions may influence setup time, machine planning, and overall production cost, but the supplied information does not assign a separate price to each item.

The specified mold material is 718H / 1.2738 steel, with a projected service life of up to 800,000 shots. The listed lead time is 25–40 days. Quality assurance includes mold trial runs, dimensional verification, and inspection before shipment. These checkpoints help identify tooling or sample issues before delivery, but they should not be interpreted as a stated scrap allowance because no scrap rate or scrap-cost formula is included.

Relevant Double Shot Experience

Longterm Mold has experience supporting double shot and overmolding programs. In one reported consumer electronics shell project, a French product brand ordered eight double shot molds. The trial results were described as having good alignment and stable samples. The company also lists high-precision custom molds, double shot tooling, and overmolding among its available services.

Longterm holds ISO 9001:2015 certification covering the design, manufacture, and sale of precision molds, as well as the sale of plastic products. The certification scope references global, EU, USA, Australia, Italy, and France markets.

Cost Factor Comparison

Frequently Asked Questions

Does the product information list a hidden setup fee?

No separate setup fee is confirmed. The information describes the two-color structure, alignment requirements, and optional cavity configuration, but the treatment of engineering and setup work must be confirmed for the individual mold design and quotation.

Are color-change charges included?

No. The data identifies compatible material pairs and a two-color process, but it does not define the number of color changes, changeover time, cleaning procedures, or additional color-change costs.

How should scrap exposure be assessed?

Project evaluation should include mold trials, dimensional inspection, pre-shipment checks, and clearly defined sample-approval criteria. The buyer should also request the supplier's position on scrap responsibility because neither a scrap percentage nor a scrap-cost policy is provided.

Recommended Quotation Review

Double shot molding can require project-specific cost review, but the supplied information does not establish setup, color-change, or scrap items as separate hidden charges. Before placing an order, request a written quotation that identifies the mold structure, material pairing, cavity count, trial requirements, inspection scope, sample-approval process, and any charges associated with production. Longterm provides OEM custom injection molds, custom mold manufacturing with injection molding, precision double shot and overmolding solutions, and mold development followed by mass production. For technical support or a detailed project discussion, contact rogerluo@longterm-mold.com.

About Longterm Mold

Longterm Manufacturing Solutions Limited, operating under the Longterm Mold brand, was founded in 2010. The company provides mold design, tooling, precision machining, mold manufacturing, and parts production for international customers. Its company profile states that it has 50 employees and produces approximately 180 molds and more than 120,000 precision-machined components each year. North America, Europe, and Australia are its main markets, while its listed product and service areas include injection molds, rapid prototyping, precision parts, and automated production solutions. Longterm has served customers in several industries and holds ISO 9001:2015 certification.