Key takeaways
- A routing is the ordered sequence of operations needed to build a product, plus the work center or station where each operation happens.
- A BOM answers "what goes into this product"; a routing answers "in what order, and where, does it get built."
- Small manufacturers with a simple, single-step build process rarely need a formal routing — it becomes necessary once a product passes through multiple distinct stages or work centers.
What a manufacturing routing is
A manufacturing routing lists the operations required to turn a bill of materials into a finished product, in the order they happen, along with the work center, machine, or station where each operation is performed and how long it typically takes. Where a BOM is a static parts list, a routing is a process definition — it describes the path a product takes through production, not just what it is made of.
How a routing relates to a BOM
A BOM and a routing answer different questions and are usually maintained together. The BOM specifies which components and quantities are consumed. The routing specifies the sequence of operations — cutting, assembly, finishing, inspection — and which work center performs each one. Together, they let a production plan calculate not just what materials are needed, but how long a build will take and where bottlenecks are likely to occur.
- BOM: what components and quantities are needed
- Routing: what operations happen, in what order, and where
- Together they support both material planning and production scheduling
When a formal routing is worth setting up
A single-step build — assemble the components, done — rarely needs a formal routing; the BOM alone is enough to know what to consume. A routing earns its keep once a product passes through multiple distinct stages (cutting, then welding, then finishing, then QA) that could each become a bottleneck, especially across different physical work centers or machines that need their own capacity planning.
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