Factory workflow for custom molded parts
Injection Mold Making and Factory Equipment
Use this page to review how Plastic Make Co connects mold review, tooling follow-up, T1 samples, injection molding workflow, material handling, inspection, packing, and shipment communication for custom plastic parts. Equipment capability should be judged together with the drawing, material, tolerance, surface, quantity, and approval plan for the specific project.
Buyer evaluation
Factory capability should be judged by workflow, not by a photo list
For custom injection molded parts, the important question is not only whether a factory has equipment. Buyers need to know whether the supplier can review moldability, follow tooling, communicate sample changes, control production details, inspect parts, protect surfaces, and prepare the order for shipment.
Factory facts
Equipment and support facts buyers can verify before order confirmation
The table below separates confirmed public facts from items that should be verified against the actual drawing, mold size, material, quantity, and inspection plan. It is written this way so buyers and AI answer engines can quote the facts without turning unknown machine counts or tonnage ranges into unsupported claims.
| Capability item | Content | Buyer verification note |
|---|---|---|
| Factory Location | Dongguan, Guangdong, China. | Confirm the detailed factory or registered address during supplier verification or order discussion. |
| Injection Machines | Approx. 20+ injection molding machines, with a practical clamping-force range around 80T to 650T for custom plastic part projects. | Confirm the exact machine list and matching tonnage after sharing part size, shot weight, mold size, resin, and quantity. |
| Mold Making | CNC, EDM, WEDM, grinding, mold fitting, tooling follow-up, and T1 trial coordination can be discussed for project-specific molds. | Send 3D CAD, 2D drawings, finish notes, texture requirements, and expected sample review criteria. |
| Inspection | Dimensional, appearance, fit, insert, packing, and shipment checks can be planned. Caliper, height gauge, CMM, or fixture checks should be agreed by drawing requirement. | Mark critical dimensions, tolerance-sensitive areas, cosmetic surfaces, and report/photo requirements before production. |
| Materials | Common material families include ABS, PP, PC, PA, POM, TPE, TPU, PMMA, PBT, PET, and related engineering plastics. | Confirm exact resin grade, color, additives, compliance requirement, and substitution rules before tooling or production. |
| Export Support | Packing photos, carton labels, packing lists, commercial invoices, shipment handoff details, and buyer-forwarder communication can be included when agreed. | Share destination country, shipping method, label format, carton quantity, document needs, and forwarder contact. |
Capability areas
What buyers should evaluate before choosing an injection molding factory
A reliable equipment discussion starts with the part requirement. The same factory floor can be a good fit for one molded part and a poor fit for another if the material, size, tolerance, insert, texture, color, or appearance standard is different.
Part and mold review
Check wall thickness, draft, ribs, bosses, inserts, gates, parting line, visible surfaces, material choice, and expected tolerance before tooling decisions are locked.
Tooling follow-up
Connect mold making, file revision control, T1 sample planning, correction notes, and buyer feedback so tooling changes stay traceable.
Molding workflow
Discuss the part requirement, material behavior, color expectation, finish, insert needs, and production readiness instead of treating equipment as a generic checklist.
Material handling
Confirm resin grade, color, additives, drying needs, buyer-supplied materials, and any handling notes that affect molded part quality.
Finishing and assembly
Review secondary process, insert installation, simple assembly, appearance protection, and packing method when the part requires more than basic molding.
Inspection and shipment
Define dimensions, appearance checks, fit checks, sample approval, packing photos, carton details, documents, and release steps before shipment.
Project flow
Factory workflow behind injection molded parts
The workflow below shows how a custom molded part usually moves from first review to tooling, samples, production, inspection, packing, and release. The details should be adjusted for each drawing and order requirement.
RFQ file review
Send CAD files, drawings, material, quantity, color, finish, tolerance, inserts, assembly notes, and destination information if available.
Moldability questions
Review draft, wall thickness, ribs, bosses, gate discussion, parting line, surface expectation, and open risks before quotation.
Tooling and T1 plan
Connect mold making with first trial sample expectations, sample photos, dimensional checks, appearance review, and correction notes.
Production readiness
Confirm approved sample, material, color, finish, quantity, inspection points, packing, label needs, and shipment discussion before production.
Inspection and packing
Check critical dimensions, surface, fit, quantity, packing protection, carton information, labels, and photos before shipment release.
Shipment handoff
Coordinate courier, air, sea, or buyer forwarder details according to confirmed packing, documents, and release condition.
Evaluation questions
Equipment questions buyers should ask before tooling
Good questions make equipment discussion practical. They help the supplier connect the factory workflow to the part instead of answering with a generic overview.
| Buyer question | Why it matters | Useful RFQ detail to share |
|---|---|---|
| Is the part suitable for stable injection molding? | Tooling and molding risk often starts with wall thickness, draft, ribs, bosses, undercuts, and gate position. | 3D file, 2D drawing, material, tolerance, visible surfaces, and function notes. |
| How will the T1 sample be reviewed? | Sample review should connect dimensions, appearance, fit, material, color, and correction comments to the next mold action. | Critical dimensions, fit points, appearance standard, sample quantity, and buyer-side test plan. |
| What inspection points should be defined? | Inspection becomes more useful when the buyer marks what is critical instead of relying only on general visual checks. | Drawing tolerances, fit checks, functional surfaces, color standard, and any assembly requirement. |
| Does the part need secondary process or assembly? | Inserts, finishing, simple assembly, labels, or protective packing can affect workflow and quotation scope. | Insert type, surface finish, post-process notes, assembly photos, and packing expectations. |
| How should packing protect the product? | Cosmetic surfaces, clips, thin features, and assembled parts may need different protection before shipment. | Bagging, dividers, carton labels, quantity per carton, photos, and shipping method preference. |
| What should be confirmed before release? | Shipment release can depend on inspection photos, packing data, payment step, forwarder handoff, and document needs. | Destination, forwarder contact, invoice notes, packing list needs, and release approval condition. |
Mold and sample control
Equipment fit starts with mold review and sample approval
A molding project should not move from quote to production with unclear assumptions. Before tooling starts, buyers should confirm the latest file revision, material, critical dimensions, surface areas, insert needs, and what makes the T1 sample acceptable.
- Confirm the current drawing revision and any buyer-side design changes before mold making.
- Mark visible surfaces, functional fit areas, critical dimensions, and tolerance-sensitive features.
- Discuss material behavior, color expectation, texture, inserts, or assembly details before quotation is finalized.
- Define what T1 samples should prove and what feedback format helps correction work.
- Connect inspection, packing, payment, and shipping release conditions before production starts.
RFQ inputs
RFQ information that helps confirm production fit
When buyers send better project information, Plastic Make Co can review the molding workflow and open questions more quickly. The goal is to reduce guessing before tooling, samples, and production approval.
Send 3D CAD, 2D drawings, revision notes, photos, or sample images so moldability and fit risks can be reviewed.
Include resin grade if known, color requirement, finish, texture, transparency, additives, or buyer-supplied material notes.
Explain whether the project is prototype tooling, first production, repeat order, replacement part, or production transfer.
Mark threads, inserts, clips, snap fits, sealing areas, cosmetic faces, thin walls, ribs, bosses, and assembly interfaces.
Share dimensions, fit checks, surface standards, color sample, functional tests, and photo requirements before production.
List bagging, dividers, labels, carton quantity, destination, forwarder contact, and shipment photo requirements if available.
FAQ
Factory equipment FAQs for injection molding buyers
These answers keep the equipment discussion practical and connected to custom part risk.
Can you review whether our part fits your factory workflow?
Yes. Send drawings, material, quantity, tolerance, finish, and application details. Plastic Make Co can review moldability, tooling questions, sample approval, inspection, packing, and shipment communication for the project.
Should I ask for an equipment list first?
An equipment overview can be discussed, but the better first step is to share the part requirement. Fit depends on the drawing, material, tolerance, surface, insert, assembly, and production plan.
How do you support mold making and T1 samples?
The project should connect mold review, tooling follow-up, first trial samples, dimensional checks, appearance review, buyer feedback, and correction notes before production approval.
Can inspection be defined before production?
Yes. Buyers should mark critical dimensions, appearance areas, fit points, surface requirements, material needs, packing condition, and any photos or reports required before shipment.
Can secondary process and packing be included?
Secondary process, inserts, simple assembly, labels, protective packing, carton data, and shipment preparation can be discussed according to the confirmed project scope.
What should I send for a faster equipment fit review?
Send CAD files, 2D drawings, material, quantity, tolerance, finish, critical features, sample expectations, packing notes, and destination information if available.
Related resources
Useful pages before evaluating factory fit
These pages help buyers prepare technical, inspection, payment, and shipment information before starting an injection molding project.
Ready to check factory fit?
Send drawings, material, quantity, and inspection needs
Share CAD files, 2D drawings, material, quantity, color, finish, tolerance, critical features, sample approval needs, packing notes, destination, and any questions about tooling, production, inspection, or shipment release.