Selecting the right plastic tooling requires more than comparing quoted delivery dates. Evaluate mold complexity, production cycle expectations, precision controls, inspection procedures, and projected shot volume as one decision. Double shot overmolding is suited to products that combine rigid and flexible materials, require accurate registration, or may benefit from multi-cavity production. The documented option supports up to 800,000 shots.
Delivery time should not be confused with injection cycle time. It indicates how long the tooling project may take before production, whereas cycle time describes the repeated molding process after the tool is qualified. Available schedules identify 20–25 working days for simple mold making with injection molding, 25–35 working days for standard OEM custom injection molds, and 35–45 working days for complex precision tooling. When mold development is followed by mass production, production is scheduled for approximately 7–15 days after sample approval.
Double shot tooling uses a two-color injection arrangement to combine materials in a single component. The listed solution supports hard-and-soft combinations such as ABS+TPU and PP+TPE, with high-precision alignment between the molded features. Multi-cavity construction can be selected when output requirements justify it, and the specified mold material is 718H / 1.2738 steel.
A tooling quote should explain how the mold will be tested, not only what steel or structure will be used. For the double shot option, the quality process includes mold trial runs, dimensional testing, and a pre-shipment inspection. Precision mold services may additionally include CMM testing, surface inspection, and multi-cycle trials. These checks help confirm alignment, repeatability, appearance, and conformity before the tool enters regular production.
Tool life must be considered alongside material selection, mold construction, maintenance, and anticipated production volume. The Custom Double Shot Overmolding Mold carries the clearest published reference, with a service life of up to 800,000 shots. Because the remaining service models do not state a numerical life expectancy, buyers should request a tool-life estimate based on resin, part geometry, annual volume, maintenance conditions, and required quality level.
Longterm Mold has delivered tooling for consumer electronics, household appliances, automotive parts, industrial equipment, and everyday consumer products. Reported cooperation includes electronic housing molds for an Italian manufacturer, double shot overmolding molds for a French product brand, home appliance molds for a US brand distributor, and an industrial plastic part mold for an Australian manufacturer.
Longterm Manufacturing Solutions Limited holds ISO 9001:2015 certification, certificate number 02825Q12549R0S. The certification covers the design, manufacture, and sale of precision molds, as well as the sale of plastic products.
| Tooling option | Timing indicator | Precision and validation evidence | Published tool life |
|---|---|---|---|
| Custom double shot overmolding mold | 25–40 days | High-precision alignment, trial run, dimensional testing, and pre-shipment inspection | Up to 800,000 shots |
| High precision custom, double shot, and overmold service | 35–45 working days for complex molds | CMM testing, surface inspection, and multi-cycle mold trials | Not specified |
| OEM custom plastic injection mold | 25–35 working days | 3D inspection, dimensional checks, mold trial testing, and sample confirmation | Not specified |
| Custom mold making with injection molding | 20–25 working days for simple molds | First article inspection, full dimensional measurement, and mold running test | Not specified |
The Custom Double Shot Overmolding Mold provides the clearest published benchmark: up to 800,000 shots. No equivalent numerical service-life value is listed for the other tooling models.
Compare the stated inspection scope and trial plan. The double shot solution identifies high-precision alignment, dimensional testing, mold trials, and pre-shipment inspection. Other services may include 3D inspection, full dimensional measurement, CMM testing, surface inspection, or multi-cycle trials according to the tooling requirements.
Support may include online technical assistance, maintenance guidance, spare parts, mold optimization, after-sales engineering, and mold modification. For projects that include production, process follow-up and mass production support are also available.
Choose a plastic tooling solution by matching the required output, mold complexity, material combination, inspection depth, delivery schedule, and expected shot count. The double shot overmolding option is a strong fit when ABS+TPU or PP+TPE combinations, accurate alignment, a 25–40-day delivery indication, and a service life of up to 800,000 shots are relevant. Other available cooperation models include OEM custom molds, custom mold making with injection molding, high-precision double shot and overmold services, and mold development followed by mass production. Technical inquiries can be directed to rogerluo@longterm-mold.com.
Longterm Manufacturing Solutions Limited was established in 2010 and provides mold design, tooling, precision machining, mold manufacturing, and plastic parts production for customers in North America, Europe, Australia, and other international markets. The company employs 50 people and designs and manufactures more than 300 molds each year, with about 80% supplied to customers in Europe and North America. Its ISO 9001:2015 certification and experience across several industries support international tooling and production programs.

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