Scales of production.

Scale of production

One-off / bespoke (job production)

Products are individually designed and manufactured to meet specific customer requirements.

Production is labour-intensive and relies heavily on skilled workers.

Costs are high due to:

individual consultation and bespoke design work

specialist skills and processes

lack of economies of scale

Example: One-off production is typically used for products such as custom furniture, specialist medical equipment, and luxury yachts or bespoke musical instruments, where each item is made to a unique specification.

Batch production

Products are manufactured in groups (batches) using the same equipment and processes.

Commonly uses:

jigs and fixtures to improve accuracy

CNC machines to ensure consistency

Once the initial set-up is complete, additional units can be produced efficiently.

Example: Batch production is commonly used for products such as wooden furniture, pottery, and electric guitars, where CNC routing allows multiple identical bodies to be produced accurately within each batch.

Mass / line production

Uses division of labour, where each worker or machine performs a single repeated task.

Production arranged in a linear sequence.

Highly mechanised systems enable:

very high output

low unit cost

consistent quality

Example: Mass production is used for products such as cars (e.g. Ford Fiesta), mobile phones, and flat-pack furniture such as Ikea Billy bookcases, where automated assembly lines allow large volumes to be produced efficiently.

Modern manufacturing systems (A-level)

Unit production systems (UPS)

Mainly used in textile manufacturing.

Garments are suspended on computer-controlled overhead carriers.

Reduces manual handling and improves workflow efficiency.

Example: Unit production systems are commonly used in clothing manufacture, where garments move automatically between sewing, finishing and inspection workstations.

Uses:

CAD for rapid design changes

rapid prototyping (including 3D printing)

flexible manufacturing systems

Best suited to low-volume, customised products.

Example: Quick response manufacturing is often used for products such as specialist packaging machinery, where a machine must be designed and manufactured quickly to suit a specific food product.

Flexible manufacturing systems (FMS)

Designed to allow fast switching between products as demand changes.

Modular / cell production:

CNC machines grouped into manufacturing cells.

Robots load and unload machines.

AGVs transport materials between cells.

Entire system is computer-controlled.

Example: Modular or cell production is commonly used for automotive engine components, where CNC machines, robots and AGVs operate together in a flexible manufacturing cell.

SMED (Single Minute Exchange of Dies)

Reduces die or mould changeover time to under 10 minutes.

Uses quick-release fixings and interchangeable tooling.

Minimises machine downtime.

Example: SMED is often applied in injection moulding, where moulds can be changed rapidly to allow different plastic components to be produced on the same machine.

Advantages:

improved quality control

better protection of intellectual property

reduced risk of supplier failure

Disadvantages:

increased administration

reduced flexibility

possible loss of specialist expertise

Example: Vertical integration is commonly seen in manufacturers that produce their own components rather than outsourcing, allowing greater control over quality and supply.