FORMING & PRODUCTION
Plastic parts & injection molds
Discuss the part, the mold or both. You can start before choosing a resin or production quantity.
Discuss this molding needConsultation, company search and introductions are free for buyers.
A new part or an existing mold?
The part design and the tooling arrangement need separate decisions.
NEW TOOLING
Develop the part and its mold together
Describe what the part must do, including temperature, chemical exposure, color and surface requirements. Review wall thickness, draft and gate locations with the mold maker. Agree which features need to be checked on molded samples.
Compare: Resin, manufacturability, tooling cost and sample acceptance.
Example: A new enclosure whose clips must work after assembly, with the resin still to be chosen.
Protolabs — Injection molding design guidelinesEXISTING TOOLING
Check the transfer and production conditions
If a mold already exists, clarify who owns it and whether it can be moved. Share its cavity count, maintenance history and compatible machine details. Compare ongoing part production and mold maintenance separately from the initial tooling charge.
Compare: Tooling ownership, machine compatibility, maintenance and repeat-order terms.
Example: Move an existing two-cavity tool while keeping the same approved part design.
Protolabs — Injection molding optionsWhat to check with a manufacturer
- Resin and the part’s environment
- Share the resin grade if it is fixed, or describe the part’s environment and function if it is open. A prototype made by a different process helps test shape, but molded samples need their own functional and dimensional review.Protolabs — Injection molding design guidelines
- Mold ownership and changes
- Ask who owns and stores the mold, which changes are included, and how repairs or transfer are handled. Put these terms alongside expected production quantities when comparing suppliers.Protolabs — Injection molding options
- Sample approval and repeat production
- Specify the checks for the first molded sample: fit, appearance, critical dimensions and functional tests. Agree how design or resin changes are approved before the next production run.Protolabs — Injection molding options · Protolabs — Injection molding design guidelines
How it works
You
Your enquiry
Tell us what you are looking for or how you plan to use it.
HAM
Confirming your requirements
HAM emails you to confirm the specifications, quantity and preferred timing.
HAM
Company introductions
If we find companies that fit your needs, we introduce them and explain what they can offer.
You can send specifications, photos or drawings by replying to HAM’s email.
You can enquire before your specifications are final
Share the application and any requirements you already know. HAM will contact you by email.
Discuss this molding needTechnical references
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