
Precision machining.
Engineered to perform.
Precision components for automation, robotics & advanced manufacturing.
Precision machining, tooling and engineered components for automation, robotics, drone and UAV programs, and Australian industry.
Have CAD files ready? Send them to our engineering team
More than a machine shop.
4131 Machining & Engineering combines machining capability with engineering and manufacturing knowledge, helping customers move from concept and prototype through to accurate, repeatable production. We work with customers to solve engineering and manufacturing problems and deliver components, tooling and production hardware that perform reliably in real-world applications.
- Manufacturability
- Accuracy
- Repeatability
- Maintainability
- Production Performance

Automation & robotics
Our specialist point of difference. We manufacture the physical precision hardware that makes automation systems perform - robot interfaces, end-of-arm tooling, handling fixtures, drone and UAV components and special-purpose machine components.
- Automation Component Machining
- Robotics Component Machining
- Robot Mounting Plates
- Robot Adaptor Plates
- End-of-Arm Tooling
- Grippers
- Pick-and-Place Tooling
- Product Handling Fixtures
- Sensor & Vision Mounts
- Servo & Actuator Mounts
- Conveyor Change Parts
- Automated Fixtures
- Special-Purpose Machine Components
- Drone & UAV Components
- Machine Upgrades & Modifications
- Replacement Automation Components
Precision machining & engineering
CNC milling, precision components, prototype and repeat production, tooling, jigs and fixtures - supported by CAD/CAM, industrial design, design for manufacture and reverse engineering.
- CNC Machining
- CNC Milling
- Precision Component Manufacturing
- Prototype Machining
- Low-Volume Production
- Repeat Production
- Industrial & Component Design
- CAD/CAM Support
- Design for Manufacture
- Reverse Engineering
- Tooling
- Jigs & Fixtures
- Workholding
- Spark EDM / EDM Machining
- Toolroom Services
- Engineering Support

From concept to component.
You don’t need to come to us with a production-ready CAD file. From an existing part, concept or application requirement, our engineering team can help develop a manufacture-ready solution.
Understand
We understand the component, application and production problem.
Engineer
We review manufacturability, materials, tolerances, tooling and production requirements.
Manufacture
We manufacture accurate, repeatable components and tooling.
Perform
The solution is designed around real-world production performance.
Engineering-led manufacturing

Engineering Support
We consider the application and manufacturing process rather than simply machining to the file.
Production Focus
Components and tooling are developed with repeatability and real-world production in mind.
Precision
Dimensional accuracy and consistency are fundamental.
Problem Solving
We work with customers on difficult manufacturing and engineering problems.
Broader Manufacturing Capability
4131 is backed by the broader B&C and RRJ Engineering group.
A B&C Company
4131 Machining & Engineering operates within RRJ Engineering Pty Ltd and is backed by the broader manufacturing capability and experience of B&C Plastics - a specialist engineering division with its own precision machining, tooling and automation focus.
Send us your CAD files.
Have a component you need manufactured? Send us your CAD files. No production-ready CAD yet? Bring us the idea or product and our engineering team will help develop it.
