Product Design & Development

Bringing a plastic product to market requires more than a good idea — it requires a design that is simultaneously functional, manufacturable, and cost-optimised for the chosen process. Our English-speaking engineering team provides end-to-end product design and development services specifically oriented toward injection moulding and extrusion, from initial concept through to production-ready tooling.

By integrating design and toolmaking under one roof, we eliminate the costly handoff errors that occur when a product designer and a toolmaker work at separate companies — and we do it at South African engineering rates that are 40–60% below comparable US or UK design firms.

Engineering team reviewing 3D CAD and DFM analysis — Johannesburg, South Africa

The Design-to-Production Process

Every product design engagement follows a structured process that ensures the final design is fully validated before any tooling investment is committed.

1. Concept Development: We work with your brief, sketches, or reference samples to define the product geometry, functional requirements, and target cost.
2. Material Selection: We recommend the optimal plastic or polymer based on mechanical performance, chemical resistance, regulatory requirements, and cost. See our materials library.
3. 3D CAD Modelling: Full parametric 3D model developed in SolidWorks, with assembly modelling where multiple components are involved.
4. DFM Review: Formal Design for Manufacturability review identifying draft angles, wall thickness, undercuts, gate locations, and weld line risks before tooling begins.
5. Mould Flow Analysis: Simulation of plastic fill, pack, cool, and warp to predict and eliminate cosmetic and dimensional issues. See our Mould Flow & DFM guide.
6. Prototype: 3D-printed or soft-tool prototype for functional and aesthetic validation. Iterations are made at this stage — not after production tooling is cut.
7. Tooling Design & Manufacture: Approved part design handed directly to our toolmaking team for mould design and machining. See our Mould & Tool Making page.
8. First Article & Production Release: First-off parts inspected against the approved drawing. Process parameters documented and locked for production.

Design for Manufacturability: Key Principles

DFM for injection moulding is a discipline in itself. The following table summarises the most common design issues we identify and resolve during the DFM review phase.

Industries We Serve

• Medical & Healthcare: Precision-moulded components with strict dimensional tolerances and biocompatible material selection.
• Automotive: Structural and aesthetic interior and exterior plastic components designed for high-volume production.
• Consumer Electronics: Enclosures, bezels, and connector housings with tight cosmetic and dimensional requirements.
• Consumer Goods: Innovative, market-ready product designs for everyday use, optimised for cost-effective high-volume production.
• Construction: Durable profiles and structural components for demanding outdoor environments.