Packaging Buying Guides · Quick guide
When Is a Physical Sample Needed?
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Most custom packaging jobs are approved on a digital proof, and for repeat orders and proven constructions that is usually enough. A physical sample is worth the extra time when something about the box is new or critical: a plain sample to check construction and fit, or a printed pre-production sample to judge colour and finish in the hand. Ask about sample options when you request your quotation.
This guide explains what each kind of check shows, what it cannot show, and how to decide which one your job needs.
Three kinds of check
There are three levels of pre-production check in custom packaging. Each answers different questions, and each takes a different amount of time.
| Check | What it shows | What it cannot show | Worth it when |
|---|---|---|---|
| Digital proof | Artwork on the dieline: text, layout, panel positions, bleed, safe areas, colour set-up | Physical fit, board feel, exact colour on board, how finishes look | Every job; on its own for repeat orders and proven sizes |
| Plain sample | The construction made up in unprinted board: size, fit, closure, insert, strength | Print colour or finish appearance | New construction, new size, tight product fit, a new insert |
| Printed pre-production sample | The box printed and finished close to production | Every variation of a full run | Colour-critical brands, premium finishes, high-value launches |
Every job goes through a digital proof. Whether you add a physical check depends on what could go wrong and how costly it would be.
Digital proofs
A digital proof shows your artwork placed on the dieline for your exact box. Production does not start until you have approved it.
Use the proof to check everything that is about content and position: spelling, legal and product information, barcode placement, logo position on each panel, which way panels face when the box is folded, bleed beyond the cut line and text kept inside the safe area. Our guides to what a dieline is and preparing print-ready artwork explain what to look for.
What a proof cannot do is show colour exactly as it will print. Screens display colour with light, while print uses ink on board, and uncoated or kraft board changes colour further. Why screen colours differ from printed colours explains the difference.
Plain samples
A plain sample is the box made up in the specified construction without print. It answers physical questions: does the product fit, does the closure work, does the insert hold the product, and does the box feel right in the hand.
It is most useful when:
- the construction is new to you, such as a first magnetic closure box;
- the product has an unusual shape, or the fit must be tight;
- there is a custom insert, especially a precision-cut one for a fragile item;
- the box has to survive the post, and you want to test packing it.
A plain sample does not tell you anything about print colour or the look of a finish. It is a structural check only.
Printed pre-production samples
A printed pre-production sample is the closest thing to the finished box before the run. It shows print, lamination and finishes on the actual board, so you can judge colour, contrast and the overall impression in the hand.
It is most useful when:
- a brand colour must match closely, particularly across a range; see Pantone colour matching on board;
- the design depends on a premium finish, such as foil blocking on soft-touch lamination, or embossing;
- the packaging is for a high-value launch where the opening experience matters;
- several stakeholders need to see and agree on the physical box.
A printed sample takes the most time to produce, because it goes through printing and finishing much like production does. Plan for it when you work backwards from your required delivery date.
Deciding which check your job needs
Ask what the most expensive mistake would be, then choose the check that would catch it.
| Your situation | Suggested check |
|---|---|
| Reorder of an unchanged design | Digital proof |
| Artwork update on a proven size and construction | Digital proof |
| New size in a construction you already use | Digital proof, plus a plain sample if the fit is tight |
| New construction or custom insert | Plain sample |
| Colour-critical branding on a new board | Printed pre-production sample |
| Premium finish combination on a launch | Printed pre-production sample |
Ask about sample options when you request your quotation, and tell us which of these situations applies. Our team will talk through the check that makes sense for your specification and your timing.
What a sample cannot tell you
A sample reduces risk; it does not remove it. Keep these limits in mind:
- Colour can vary slightly between a sample and a production run, and within a run. A clear colour reference, ideally Pantone for key brand colours, keeps variation small.
- A single box is not a drop test. If the box must survive the post, pack it as you would for real and send it through the system you use.
- Samples take time. A sample is made, sent and reviewed before production starts. Allow for it in your plan; our guide to custom packaging lead times explains where it fits.
Common mistakes
- Skipping a physical check on a new construction. A plain sample is the quickest way to catch a fit problem.
- Approving colour from a screen. Screens and print render colour differently.
- Asking for a printed sample when only fit is in question. A plain sample answers structural questions faster.
- Not planning time for the sample. It sits before production, so it moves the whole timeline.
- Changing several things after the sample. Each change needs a new proof; agree changes in one round.
- Comparing suppliers' samples on a different basis. A plain mock-up and a printed sample are different checks. See comparing packaging quotations.
When you are ready, request a quotation and tell us what you need to check before production.