How much padding do I need for shipping 3D prints?

Use at least 25-30mm of padding (bubble wrap or foam) on all sides. Fragile or detailed prints may need 40-50mm. Parts with thin features or overhangs are especially vulnerable to damage in transit.

What is volumetric weight?

Couriers charge by whichever is higher: actual weight or volumetric weight. Volumetric weight = L x W x H (cm) / 5000. Lightweight but bulky packages are charged by volume rather than weight.

How should I pack 3D printed parts?

Wrap each part in bubble wrap or tissue paper. Fill empty space with crumpled paper or packing peanuts. Place heavy parts at the bottom. Seal with strong tape. Label as fragile if appropriate.

What is the cheapest way to ship 3D prints in the UK?

Royal Mail Second Class is cheapest for small parcels under 2kg. For larger or heavier items, compare Evri, Royal Mail, and DPD via a comparison site. Small Letter rates work for very thin flat prints.

3DPrintCalcs

Shipping Size Calculator — Box Dimensions & Weight

Calculate box dimensions and shipping weight for printed parts.

Part X

Part Y

Part Z

Part Weight

Weight of each printed part

Number of Parts

Padding (all sides)

Bubble wrap + box clearance

How We Calculate This

Shipping Size Formulas

Box dimensions = Part dimensions + Padding on all sides
Packaging weight = Estimated box + wrapping material weight
Volumetric weight = L(cm) x W(cm) x H(cm) / 5000
Chargeable weight = Greater of actual weight or volumetric weight

The volumetric weight formula (divide by 5000) is used by most UK couriers. Royal Mail uses a different system based on size bands.

Frequently Asked Questions

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Last updated: February 2026

All calculations are estimates. Always verify settings with test prints before committing to final prints.