Custom Injection Moulding & Mould Tooling, Spec to Volume
From a single moulded housing to high-volume production, the tool decides quality and piece price. P&A International engineers plastic and rubber injection moulding and mould-tool manufacture — a comprehensive range of shapes from many materials, including transparent lens and optics — with over-moulding, post-machining and finishing.
As an engineering-led contract manufacturer founded as an engineering consultancy, we assign one dedicated engineer from mould-tool design to free off-tool samples, then scale into volume through our vetted partner-factory network, where every supplier is ISO 9000 certified or better.
consultancy + manufacture
per project, end-to-end
before mass production
every supplier certified or better
one-off to high volume
What we deliver
Injection moulding
Plastic and rubber moulded parts in many materials, from miniature components to large housings and panels.
Mould-tool manufacture
Single and multi-cavity, hot- and cold-runner mould tools designed and built for your volume and budget.
Over-moulding & inserts
Over-moulding (co-mould) for soft-touch and seals, plus insert moulding of metal and electronic components.
Optics & finishing
Transparent lens and optics, plus texturing, painting, chroming, pad printing, post-machining and assembly.
Engineering capability
- Mould-tool design — single, multi-cavity, hot- and cold-runner
- Plastic and rubber materials including transparent lens and optics
- Over-moulding (co-mould) and insert moulding
- Design-for-moulding — wall thickness, draft, ribs and gating
- Post-machining of moulded parts where required
- Finishing — texture, painting, chroming, pad printing
- Assembly, kitting and private-label programs
- Free off-tool samples with quality-assessment reports before any volume order
At a glance
| Processes | Injection moulding; over-mould / co-mould; insert moulding |
| Materials | ABS, PC, PP, nylon, TPU, silicone, optical grades & more |
| Tooling | Single & multi-cavity; hot- and cold-runner |
| Optics | Transparent lens and optics |
| Secondary | Post-machining, painting, chroming, pad printing |
| Programs | Complete part, assembly or private-label product |
| Samples | Free off-tool samples + quality-assessment reports before mass production |
| Quality | Every supplier in our network is ISO 9000 certified or better |
Why engineers & buyers choose PA
For design engineers
A true design partner — one dedicated engineer, mould-tool strategy, design-for-moulding review (wall, draft, ribs, gating) and material selection including optical grades. We design the tool around your part, not the other way round.
For purchasing
Low-risk scalability — free off-tool samples before mass production, tooling matched to your volume, target-cost DFM, a single point of contact, and a vetted ISO 9000+ partner network managed end-to-end by P&A.
3 easy steps to get started
Send us your part
Share a 3D model, material and volume — or just the application. One dedicated engineer recommends the tooling and material.
Proposed tooling & quote
You receive a proposed mould-tool and moulding strategy with indicative pricing — typically within 48 hours.
Samples & production
Free off-tool samples with quality-assessment reports. On approval, your parts are moulded, finished, inspected and shipped through our partner network.
Applications
Consumer products & appliances · electronics & enclosures · automotive · medical & optics · lighting lenses · industrial components.
Injection moulding sits alongside our metal capability. Explore the aluminium & metal hub, CNC machining for tooling and inserts, die casting for metal housings, and our contract manufacturing capabilities.
Designing a better moulded part
A few early decisions shape every moulding — sharing this detail lets us quote and prototype faster:
| Wall thickness | Keep walls uniform (typ. 1.5–3 mm); thick sections sink and warp. |
| Draft | Add draft to all faces (typ. 1–2°) so parts release cleanly. |
| Ribs & bosses | Rib thickness ~60% of wall to avoid sink marks on the show face. |
| Material | Match the polymer to strength, temperature, optics and compliance. |
| Tooling class | Volume sets the tooling — prototype/soft tool for low volume, multi-cavity hot-runner for high volume. |
What to send us for a fast, accurate quote
The more of this you can share, the quicker we can return a proposed design and price:
- A 3D model (STEP/IGES) and a drawing
- Plastic / rubber material or grade (we can advise)
- Optical or cosmetic requirements
- Annual volume (drives the tooling class)
- Over-mould / insert / assembly needs
- Target cost and call-off pattern
Not sure of the material or tooling? Send the part and application — recommending the polymer and tool is part of what our engineer does.
📄 Download the plastic injection moulding RFQ checklist & quick reference (PDF)
Get a quote
Send your 3D model and one dedicated engineer will reply — typically within 48 hours — with a proposed tooling and moulding approach and indicative pricing.
One dedicated engineer reviews every enquiry and replies with a proposed design and indicative pricing. Your details are used only to respond to your enquiry. Prefer email? support@pa-international.com.au