What Is a Fair Payment Schedule for Double Shot Molding Tooling?

For a double shot molding tool, a practical payment plan is 50% at order placement, 30% after T1 samples are completed and reviewed, and the final 20% before shipment. This milestone-based structure connects payment to measurable progress in tool development and gives the buyer opportunities to verify quality. Before ordering a custom double shot overmolding mold, confirm the expected 25–40-day delivery period, trial process, dimensional inspection, and pre-shipment approval requirements.

Recommended Payment Structure

• Pay a 50% deposit to approve the tooling project and begin mold design and manufacturing.
• Release 30% after the first T1 samples are produced and evaluated.
• Pay the remaining 20% before shipment once mold trials, dimensional checks, and final inspection are complete.
• For consumer electronics applications, verify part alignment, material compatibility, surface quality, and sample approval before settling the balance.

Why Milestone-Based Payments Matter

Double shot tooling combines two-color injection technology with accurate part positioning and controlled material bonding. It may involve combinations such as ABS and TPU or PP and TPE, making technical verification especially important. A payment plan based on project milestones provides more control than one based only on dates.

The first 50% installment normally covers the start of a custom mold program, including engineering, material preparation, machining, and assembly. After the initial mold trial, T1 samples give the buyer an opportunity to check dimensions, appearance, alignment, and molding performance. The second 30% payment is linked to this review stage.

The final 20% should be released only when the tooling has completed its trial runs, dimensional testing, and pre-shipment inspection. The mold steel, cavity arrangement, expected service life, and other technical terms should also match the approved agreement. The listed specifications include 718H / 1.2738 mold steel, optional multi-cavity construction, and a service life of up to 800,000 shots.

Supplier Capability and Project Experience

Longterm has delivered double shot overmolding tools for consumer electronics applications. In one French project, the supplier produced eight sets of molds for a consumer electronics shell. The reported results included accurate alignment and consistent trial samples. A separate project in Italy involved three electronic housing mold sets, with customer feedback highlighting dimensional precision, smooth surfaces, responsive communication, and delivery on schedule.

Longterm Manufacturing Solutions Limited maintains ISO 9001:2015 certification covering the design, manufacture, and sale of precision molds, as well as the sale of plastic products. Available after-sales services for this type of tooling include online technical assistance, mold maintenance, and spare parts support.

Payment Milestones and Required Checks

Frequently Asked Questions

Is the 30% installment paid before or after T1 samples?

Under the stated payment arrangement, the second installment is paid after T1 samples have been produced. This allows the buyer to review the initial molding results before making the next payment.

What needs to be verified before the final payment?

Review the completed mold trial, dimensional test results, and pre-shipment inspection records. For double shot tooling, confirm that the two materials are compatible and that the parts meet the approved requirements for alignment, appearance, and function.

Can the terms change for a more complicated mold?

The product information gives a 25–40-day delivery estimate, while the wider service description indicates 35–45 working days for complex precision molds. Any difference should be written into the purchase order or technical agreement. Unless otherwise negotiated, the stated 50%/30%/20% structure remains the reference payment schedule.

Conclusion

A 50% advance, 30% payment after T1 sampling, and 20% balance before shipment offers a transparent way to fund double shot molding tooling. The agreement should clearly define the mold structure, materials, steel grade, inspection criteria, delivery schedule, sample approval process, and after-sales responsibilities. Longterm provides OEM custom plastic injection molds, custom mold making with injection molding, high-precision double shot and overmolding solutions, and mold development combined with mass production. For technical consultation, contact rogerluo@longterm-mold.com.

About Longterm

Longterm Manufacturing Solutions Limited was founded in 2010 and supports customers in North America, Europe, Australia, and other international markets. Its services include mold design, tooling, precision machining, mold manufacturing, and plastic parts production for small- and medium-volume orders. The company employs 50 people, holds ISO 9001:2015 certification, and serves customers across several industrial sectors.