Geometry + application
Current CAD/drawing, installation context, mating components, load, temperature, contact media and appearance zones.
Evidence review 01 / new part + mold
Housing to first-off.
How an industrial enclosure program can connect application requirements, thermoplastic selection, moldability and approval evidence before recurring production begins.
Problem definition
A housing is a system interface, not an isolated shell.
Mounting points, connectors, ribs, bosses, sealing or ventilation features, appearance surfaces and mating parts all change the mold and inspection conversation. Quoting only from outside dimensions leaves the important risks unowned.
Material + DFM
Thermoplastic grade, wall transitions, draft, ribs, bosses, undercuts, gate/ejection visibility and distortion risk.
What proves success?
Critical dimensions, assembly fit, surface condition and project-specific functional evidence identified before trial release.
Publication boundary. The customer-provided material supports injection molding, tooling, CAD review and inspection capability. It does not provide a public customer name, verified cycle time, scrap improvement or dimensional result for this housing; none is invented here.
Decision chain
Four gates before the part is ready to repeat.
Each gate ends with an artifact the buyer can review. The exact artifact and acceptance limit are confirmed in the written project plan.
Requirement baseline
Lock revision, application, annual demand, service conditions, mating context and critical features.
DFM + resin basis
Record geometry observations, proposed changes, material assumptions and unresolved tests.
Tool + trial route
Confirm cavity strategy, gate/ejection intent, visible surfaces, trial samples and correction ownership.
First-off evidence
Connect dimensional, visual, fit and functional checks to the approved sample and current revision.
Evidence packet
What the buyer should be able to trace.
The purpose of the packet is not paperwork volume. It is to connect the released component to the decisions that made it acceptable.
GateOwnerStatusReviewable output
Requirement reviewCustomer + SRRPBefore quotationControlled input list, assumptions and missing decisions
DFM / materialEngineeringBefore tool releaseGeometry observations, resin basis and approval questions
Trial loopTooling + moldingBefore productionTrial condition, issue list, corrections and sample identity
First-off releaseQuality + customerProject-definedAgreed measurement, appearance, fit/function and pack basis
Applicable boundary
- Custom thermoplastic injection molded housings and related functional components.
- Tool, machine, resin, tolerance and inspection fit remain project-specific.
- Any secondary process or partner execution is disclosed in the quotation.
Publication record
Prepared by SRRP Engineering Content Team. Engineering publication review: SRRP Injection Molding Project Review. Published and updated 31 July 2026. Customer identity and commercial data withheld.