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How to brief a box in millimetres without losing a panel

A clear measurement brief for packaging: internal and external sizes, board allowance, orientation and a physical fit check.

Packaging Workshop · 16 September 2026 · 4 minute read

How to brief a box in millimetres without losing a panel — CraftyWand packaging concept
Packaging concept from the CraftyWand inspiration gallery.

Measure the thing you are actually packing

Measure the finished product with every cap, handle and projecting part in place. If several items share a box, arrange them as they will be packed before measuring the group. Include the intended insert or protective material. A product's catalogue dimensions are a starting point, not always its packing envelope.

Name each dimension

Length, width and depth can mean different things in different templates. Sketch the front view and label all three axes. For a standing carton, mark which face is the front and which direction is up. Send that sketch with the numbers. It removes an ambiguity that a string such as 60 × 40 × 120 mm cannot resolve by itself.

Separate the internal and external size

The space available inside a box is not the same as the size on the outside. Board thickness, folds and construction affect the relationship. Ask the converter to confirm allowances rather than adding an arbitrary amount to every dimension. Keep the approved dimensions with the specific structure and board specification.

Check size before decorating

In CraftyWand, select a supported structure and inspect its dimensions before committing to the artwork. A quick panel-numbered layout is enough for the first review. Export a suitable sample, print at actual size and check the scaling with a ruler. A print dialogue set to fit the page can quietly invalidate the exercise.

Make a rough sample, then a proper one

A paper cut-out helps you understand folds and panel orientation. It does not reproduce the stiffness or tolerances of the final material. Request a structural sample in the intended stock when fit matters. Record the accepted version and stop using superseded templates so that the artwork and supplier are working from the same geometry.

Put the idea to work.

Choose a model, bring your own artwork and start building in CraftyWand.

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