The production line buyer’s roadmap
Eight stages from “I want to make something” to a line running at rate — what you decide at each one, what document it produces, and what it costs to skip.
How to use this page — Each stage below asks a question, produces a document, and links to the article that works it through in detail. You do not have to do the work yourself; you do have to know which stage you are in, because almost every expensive surprise in a first line project is a stage that was skipped rather than a decision that was wrong.
Stage 1 — Define the product
The question: exactly what are you making, in what pack, from what material, to what standard?
Eight items have to be pinned down before anyone can quote you anything: pack format and sizes, recipe and its process conditions, raw material specification and how much it varies locally, target output, shift pattern, shelf life, the standard the product must meet, and the SKU mix. The list also works as a supplier filter — a supplier who quotes without asking for most of them is selling you a standard machine.
Produces: a written product brief. → Eight things to pin down before a supplier can quote you anything
Stage 2 — Size to demand, not to ambition
The question: how much can you actually sell, and over how many hours will you make it?
The most common first-line mistake is not mechanical but commercial: a line sized to the brochure's proud number, running two days a week because that is all the market takes. The shift pattern belongs in this decision, because ten tonnes a day on two shifts needs roughly half the machine of ten tonnes a day on one.
Produces: a target output and a shift pattern. → Your first production line: what nobody tells a first-time buyer
Stage 3 — Design the process
The question: what physically has to happen to your material, and what does that need?
This is the stage most often skipped and the one that makes every later stage worse. Four documents: the process route (operations, not machine names), the mass balance (material in, losses, product out), the utilities schedule (per step, at peak) and the layout. A machine list is an output of these, not an input to them.
Produces: four documents that make rival quotations comparable. → Why the process comes before the machines
Stage 4 — Set the automation level, per step
The question: which steps earn automation on your numbers, and which should stay manual?
The automation business case you will be shown was written for a labour market with expensive people and fast technical support. Here, direct labour is comparatively cheap and artisans are scarce, so headcount is the weakest reason to automate. Tolerance, safety and quality records are the reasons that survive.
Produces: an automation decision per process step, plus the interfaces to add more later. → Semi-automatic or fully automatic? The arithmetic is different here
Stage 5 — Prepare the site, starting now
The question: will the building, the power, the water and the permits be ready when the containers arrive?
This stage runs in parallel with the others rather than after them, because its long-lead items are the longest in the project: a water analysis takes weeks and determines the treatment equipment; a transformer and utility connection frequently take longer than the machines; an environmental authorisation can gate the building permit. Two building checks cause the most expensive surprises — door opening and floor loading.
Produces: a site that will be ready, and long-lead applications already moving. → Before the machines: land, power, water and permits
Stage 6 — Compare suppliers on something other than price
The question: three quotations, one is 40% cheaper — what is the difference actually made of?
Issue the same process route and utilities schedule to every supplier so they answer the same question, then evaluate on the seven places a price gap comes from: contact material grade and thickness, bought-in components, the control panel standard, safety guarding, the documentation pack, whether the controller is open or locked, and what is truly in scope.
Produces: a normalised comparison against your own scope list. → Three quotes, one is 40% cheaper. Now what?
Stage 7 — Contract for an outcome, not a delivery
The question: what happens if the line does not make what you were told it would?
A proforma invoice describes an event. Eleven clauses describe an outcome, and the first is the important one: an output commitment in good units per hour on your own product, tied to a written acceptance protocol, tied to the final payment. Every one of these terms is negotiable before a deposit and essentially none of them afterwards.
Produces: a contract you can rely on. → The eleven clauses that decide a production line purchase
Stage 8 — Plan the people and the first year
The question: who runs it, who fixes it, and what happens in month five?
Count posts rather than people, apply a coverage factor, and arrange the maintenance capability — the genuinely scarce role — before commissioning rather than after the first breakdown. Operators are trained during commissioning, on your line, with documents your team keeps. And the wear-part kit is priced on day one, not discovered in month five.
Produces: a staffed line that keeps running. → How many people does a production line actually need? · What spare parts to hold · Operator and maintenance training
The eight, on one page
| Stage | Produces | Cost of skipping it |
|---|---|---|
| 1 · Define the product | A written product brief | Suppliers quote standard machines against a guess |
| 2 · Size to demand | Target output and shift pattern | Over-capacity you finance for years |
| 3 · Design the process | Route, mass balance, utilities, layout | Steps with no machine; quotations not comparable |
| 4 · Set automation per step | A decision per step, plus future interfaces | Capital in the wrong place; a rebuild to upgrade |
| 5 · Prepare the site | A ready site; long-lead items moving | Equipment in crates waiting for power |
| 6 · Compare on more than price | A normalised comparison | Paying for the cheapest quote twice |
| 7 · Contract for an outcome | An enforceable output commitment | The whole capacity risk sits with you |
| 8 · People and first year | A staffed, maintainable line | A good line producing badly |
Two stages account for most of the damage. Stage 3 makes every later stage worse when it is skipped, and stage 7 is where the capacity risk quietly changes hands.
How these eight relate to our seven delivery stages
Worth stating plainly, because they are two different sequences. The eight stages above are the buyer's — the decisions that have to be made whoever you buy from, most of them before a supplier has been chosen. Our seven delivery stages — consult, feasibility, design, source and build, install, commission, maintain — describe how a project is executed once it is under contract, and are set out in production lines.
A buyer working alone still has all eight stages to complete. What a delivery partner changes is who carries stages three, six, seven and eight — not whether they happen.
Where we come in
We work the buyer's stages with you as a defined piece of work, and the output is documents you keep regardless of who you eventually buy from: the product brief, the process route and mass balance, the utilities schedule, the layout, the supplier comparison and the contract review. Where we go on to deliver the line, those documents become the specification and the acceptance protocol. Where you buy elsewhere, they are what makes that purchase safe. Feasibility and line sizing describes the first stages and what they cost.
Frequently asked questions
Find out which stage you are actually in.
Thirty minutes, no jargon required, no sales pitch. Tell us what you want to make and how far you have got; we will tell you what the next stage needs and what it produces.