Job Shopvs Production Shop.
This is the difference that explains why one shop quotes your single part cheerfully and another will not return the call. Neither is being difficult; their economics genuinely differ.
- Option A /
- Job Shop
- Option B /
- Production Shop
- Compared on /
- 7 dimensions
- Verdict /
- Both win — see below
Short answer
A job shop makes varying parts to each customer's specification and is built around constant changeover, while a production shop makes long runs of the same part and is built around minimising cost per piece.
Side by side
| Job Shop | Production Shop | |
|---|---|---|
| Typical quantity | One to a few hundred | Thousands and up |
| Changeover | Constant — the whole operation is built for it | Rare and expensive |
| Cost per piece | Higher — setup is spread thinly | Much lower at volume |
| Lead time on a new part | Short — no tooling to develop | Long — tooling and process development first |
| Unfamiliar work | Normal | Disruptive |
| One-off and repair work | Core business | Usually declined |
| Dedicated tooling | Minimal, general-purpose | Extensive and part-specific |
Choose Job Shop when
- One-off, prototype and repair work
- Replacing an obsolete or unavailable part
- Small batches that change from order to order
- Anything needing engineering judgement rather than a fixed process
Choose Production Shop when
- High volumes of an identical, stable part
- Cost per piece being the dominant consideration
- A mature design that will not change
- Long-term supply of a catalogue component
The verdict
If the part repeats in the thousands and the design is settled, a production shop will beat a job shop on price and should. If you need one, or fifty, or a part that does not exist yet, a job shop is not the expensive option — it is the only one set up to do it at all.
Questions People Ask
What is the difference between a job shop and a production shop?
- A job shop makes varying parts to customer specification in small quantities and is organised for constant changeover. A production shop makes long runs of the same part with dedicated tooling and is organised to minimise cost per piece. They are different business models, not different sizes.
Why will some machine shops not quote a single part?
- Because their economics depend on long runs. A production shop's setup, tooling and process development only pay back across thousands of pieces, so a single part disrupts the schedule and cannot be priced sensibly. Job shops are built the other way round.
Want a straight answer for your part?
Send the drawing or describe what it has to do. We will tell you which route we would take, even when it is not ours.