

Some collating jobs never fit a standard machine’s stated range, and every operator adjustment made to force the fit costs material, time or both. Bespoke machinery exists for exactly this shortfall, built around a job rather than adapted to one already on the line. Production planners meet this problem more often than machine specification sheets admit.
Left unresolved, an ill-fitting job becomes a recurring bottleneck rather than a one-off headache. Our team approaches this the same way it approaches bespoke engineering, putting the specification first so the machine follows it. That order turns an awkward job into one running as predictably as any standard line.
Here is what marks a job as non-standard, and how a properly specified build closes the gap.
A collating job counts as non-standard when its substrate, sheet size or sequencing sits outside a collator’s stated operating range.
Three triggers show up most often on production floors:
UK production output fell 0.1% in the three months to April 2026, the first such fall since November 2025, according to the Office for National Statistics (ONS). Manufacturing bucked that trend, rising 0.6% over the same period. Machinery and equipment output fell 4.0%, though, the second-largest negative contribution among the 13 manufacturing subsectors, behind only electrical equipment, down 4.4% [1].
Standard machines can absorb some variation through operator adjustment, but only up to a point. Beyond that point, the mechanism itself becomes the limiting factor.
That is where custom collating equipment, specified around the job rather than adapted to it, becomes the more reliable route to a repeatable result.
Certain substrates raise problems a friction-feed collator was never designed to solve, whether that is marking, distortion or misfeeds under contact pressure. Typical examples include:
A special application machine addresses this directly, with the feed mechanism configured for the material at the point of build rather than adjusted afterwards to compensate. Suction-feed collation, for example, lifts each sheet from the pile without contact pressure, which matters when the stock marks easily or does not sit flat.
This is also where custom collator design pays for itself over time. A machine specified for one demanding substrate tends to handle the standard end of the range without difficulty, while the reverse is rarely true.
The specification-to-build process for bespoke machinery starts with a detailed production requirement, covering substrate, format, throughput, and sequencing, which is agreed before any design work begins.
That specification then moves through a stage-gated design review, with formal reviews at three points:
The design is frozen after each review, so any change requested outside the process is costed and time-lined before it is agreed. Getting this stage right matters more than it might appear.
The Institution of Mechanical Engineers (IMechE) notes that identifying the risks, regulations and standards associated with a product early in development improves the chance of success, and that failing to do so can cause a project to fail altogether [2]. Changes made after a design freeze add cost and delay. The same logic applies directly to specification-led manufacturing, where a defined production need, agreed and frozen before build begins, keeps a project on time and on budget.
Testing happens throughout design, right through to final delivery. Bespoke machines can be tested beyond industry standards before dispatch, with live camera access available so progress can be verified before the equipment reaches site. For made-to-order machinery, that sequence, not the speed of a first concept sketch, determines whether the finished machine performs as specified.
A collating job that does not fit a standard specification will keep causing problems until it is treated correctly, as one needing a machine built around it rather than adjusted to fit one already on the line. Defined properly, from substrate through to sequencing, that job runs as reliably as any standard collating process. Bespoke machinery is the bridge between the two, provided the specification comes first, and the build follows it.
Col-Tec has been designing suction-feed and special application collators for more than 50 years, working from a Hampshire base with installations across international markets. Every bespoke build follows the same discipline. You define the job first, and then our team build the machine to meet it, tests and verifies it before it reaches a customer’s production line.
Call +44 (0) 1425 627755 or submit an enquiry to discuss a bespoke specification with the team.
[1] GOV.UK, Office for National Statistics (ONS), Index of Production, UK: April 2026 (2026): https://www.ons.gov.uk/economy/economicoutputandproductivity/output/bulletins/indexofproduction/april2026
[2] Institution of Mechanical Engineers (IMechE), Solid Groundwork Essential for Product Development Success: https://www.imeche.org/news/news-article/feature-solid-groundwork-essential-for-product-development-success
Recent Posts


