If plastic tooling shows excessive wear before the agreed service life, responsibility for repair expenses depends on the service package, warranty coverage, and documented tooling requirements. Longterm offers different forms of after-sales assistance, including maintenance guidance, remote technical support, replacement parts, mold optimization, and, for its custom mold making plus injection molding service, free warranty-period repair. These terms should be verified before production begins.
There is no single repair-cost policy covering every plastic mold order. Each claim must be reviewed against the selected business model and the commitments recorded in the quotation, contract, and technical specifications. The custom mold making plus injection molding package specifically states that repairs are free during the warranty period. Other programs may provide technical assistance, maintenance recommendations, spare parts, engineering support, or mold modification without promising automatic no-cost repair.
A practical assessment should begin with the mold trial history and inspection documentation. Relevant records may include 3D inspection results, dimensional reports, sample approval, CMM measurements, surface checks, mold running tests, and multi-cycle trials. These records help determine whether the condition results from a manufacturing issue, an agreed design limitation, normal operating wear, improper maintenance, or production conditions outside the original specification.
Longterm's OEM custom plastic injection mold service includes mold maintenance guidance, online technical assistance, and spare parts supply. For precision tooling, double-shot molds, and overmolding projects, the listed support includes ongoing mold optimization and after-sales engineer assistance. Projects combining mold development with plastic injection mass production may also receive production process follow-up and mold modification support.
The applicable tooling materials and expected life are also important when reviewing an early-wear issue. Product information lists S50C and P20 for mold bases, 718H, 1.2738, and S136 for cavity steel, and an expected mold life ranging from 50,000 to 1,000,000 shots. The promised life should be compared with the actual material selection, cycle conditions, maintenance history, and approved production volume.
| Service model | After-sales support listed | Inspection or production controls |
|---|---|---|
| OEM custom plastic injection mold | Maintenance guidance, technical support, and spare parts supply | 3D inspection, dimensional checks, mold trials, and sample confirmation |
| Custom mold making plus injection molding | Online technical support and free repair during the warranty period | First article inspection, complete dimensional measurement, and mold running tests |
| High-precision custom mold, double-shot mold, and overmold | Long-term mold optimization and after-sales engineer support | CMM testing, surface inspection, and multi-cycle mold trials |
| Mold development plus plastic injection mass production | Production follow-up and mold modification assistance | IQC, IPQC, FQC, and sample sign-off before shipment |
Identify the business model used for the order and check whether the quotation or warranty specifically includes free repair. The stated coverage for warranty-period repair applies to the custom mold making plus injection molding service and should not automatically be extended to other programs.
Review the approved drawings, steel grades, mold-life expectation, cycle count, sample approval, trial reports, and dimensional results. The responsibility for repair costs can only be assessed accurately when the tooling condition is compared with the original technical agreement.
Depending on the findings, the solution may involve maintenance, replacement parts, mold optimization, engineering support, or modification work. Any chargeable repair should be discussed after the cause and scope of work have been documented.
Does Longterm automatically cover every early-wear repair?
No. The available information does not establish universal automatic coverage. Free repair within the warranty period is expressly associated with the custom mold making plus injection molding service, while other service models list different forms of support.
What if the order does not include free repair?
Longterm may still provide maintenance recommendations, remote technical assistance, spare parts, mold optimization, after-sales engineering, or modification support. The exact response and any associated cost depend on the order terms and the technical diagnosis.
Which documents should be prepared for an early-wear discussion?
Prepare the purchase agreement, warranty terms, approved specifications, mold trial records, dimensional inspection results, sample confirmation, material information, maintenance records, and current shot count. This evidence supports a clear review of whether the tooling has failed to meet its agreed requirements.
When plastic tooling wears out sooner than expected, repair costs should be settled by referring to the selected service model, warranty language, technical specifications, and inspection evidence. The most explicit no-cost provision is free repair during the warranty period under the custom mold making plus injection molding package. Other programs focus on technical guidance, spare parts, optimization, engineering assistance, or mold modification. For a project-specific assessment, contact Roger Luo at rogerluo@longterm-mold.com.
Longterm Manufacturing Solutions Limited was established in 2010 and provides mold design, precision machining, tooling production, mold manufacturing, and plastic parts production for international customers. The company has 50 employees across engineering and manufacturing, produces more than 300 molds each year, and supplies approximately 80% of its output to Europe and North America. Longterm lists ISO 9001:2015 certification and serves customers in consumer electronics, home appliances, automotive, industrial equipment, and daily consumer goods.

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