Selling 3D Printed Items at Craft Fairs: Safety, Testing and the Law

Is your 3D print a toy? The "play value" test

Under the Toys (Safety) Regulations 2011, a toy is any product designed or intended for use in play by children under 14. That definition catches the vast majority of 3D printed items sold at craft fairs: fidget toys, articulated dragons, fashion doll accessories, dolls house furniture, figurines, desk toys, phone stands shaped like characters, keyrings with play elements.

The legal test hinges on whether the item has "play value" for a child under 14. A label stating "not a toy" or "decorative item only" does not automatically exempt a product. It helps you state your intent, but it must be supportable. If the item looks like a toy, is shaped like a toy, would appeal to a child, or is sold alongside toys, Trading Standards can and do treat it as a toy regardless of what the label says.

For 3D printed items the question is usually obvious. An articulated flexi-dragon, a fidget spinner, a Pokémon figure, or a set of stacking rings clearly have play value. The grey area is narrower than most sellers assume.

**Practical rule of thumb:** if there is any doubt about whether your item has play value, treat it as a toy. The consequences of non-compliance (criminal offence, fines of up to £5,000 per item, and seizure) are far more serious than the cost of testing.

What the law requires if your item is a toy

If your 3D printed item falls within the toy definition, you must:

• Comply with the Toys (Safety) Regulations 2011
• Test against the relevant parts of BS EN 71: EN 71-1 (mechanical and physical properties), EN 71-2 (flammability), and EN 71-3 (migration of certain chemical elements)
• Compile a Technical File documenting your compliance: test results, risk assessment, design specifications, materials list
• Issue a Declaration of Conformity (DoC) stating the product meets the essential safety requirements
• Apply the UKCA mark (for sale in Great Britain) and/or CE mark (for sale in Northern Ireland or the EU)
• Display on the item or packaging: the manufacturer's name and GB address, and a product identifier (type, batch, serial, or model number)
• Include appropriate age warnings, for example "Not suitable for children under 36 months" with the reason, such as "small parts"

Selling toys that do not comply is a criminal offence. Penalties include fines of up to £5,000 per item and, in serious cases, imprisonment. Trading Standards can seize and destroy non-compliant products.

EN 71 testing: what it means for 3D prints

**EN 71-1: Mechanical and physical properties**

Tests whether the toy has sharp edges, sharp points, or small parts that pose a choking hazard. Toys are subjected to torque, tension, drop, and impact tests simulating normal use and foreseeable abuse. For 3D printed items this is particularly important: layer adhesion in FDM (fused deposition modelling) printing creates weak points, and parts can snap along layer lines under stress, producing sharp edges or small fragments. You can self-certify EN 71-1 by performing the tests yourself using the correct equipment and procedures.

**EN 71-2: Flammability**

Tests whether the toy catches fire too easily or burns too quickly. Thermoplastics like PLA and PETG generally perform well, but the test must still be documented. You can self-certify EN 71-2.

**EN 71-3: Migration of certain elements (chemical safety)**

Measures whether regulated chemical elements can migrate out of the toy material under simulated conditions of mouthing, swallowing, and skin contact. This is the critical test for 3D printing and the one you cannot do at home; it must be performed by an accredited laboratory.

For a step-by-step walkthrough of the self-certification process for EN 71-1 and EN 71-2, see our companion guide on UKCA marking for handmade toys.

Why EN 71-3 matters specifically for 3D printing

PLA, the most commonly used 3D printing filament, is often marketed as "plant-based" or "biodegradable." This leads many sellers to assume it is inherently safe. It is not that simple.

While the base PLA polymer may be low-risk, filament contains pigments, fillers, processing additives, and stabilisers. The regulated elements in EN 71-3 are primarily associated with pigments, especially in darker or more saturated colours. Two filaments from the same manufacturer can produce different EN 71-3 results purely due to pigment formulation.

Key points sellers get wrong:

• "Food-safe" certification on a filament is not the same as toy safety compliance; food contact regulations and toy safety regulations are different regimes with different tests and different limits
• EN 71-3 testing is tied to specific filament brands, types, and colour variants; a certificate for one brand's PLA does not cover another brand's PLA
• Colour is not cosmetic when it comes to chemical safety; a passing result for white PLA says nothing about the same brand's red or black PLA

Routes to EN 71-3 compliance for small makers

There are three practical routes:

**1. Direct lab testing**

Send your own filament samples to a UKAS-accredited lab. This gives you maximum control and a certificate tied directly to your materials. It is also the most expensive route.

**2. Consortium or shared certificate access**

Organisations like the ColourSafe Consortium and 3D CertHub have emerged specifically to make EN 71-3 certification affordable for small 3D printing makers. They test common filament brands and make the resulting certificates available to makers who use those specific filaments. This is a lower-cost route but requires careful matching: you must be using the exact filament brand, type, and colour range covered by the certificate, and you must maintain traceability records showing which filament was used for which products.

**3. Filament manufacturer certificates**

Some filament manufacturers now provide EN 71-3 certificates for their products. Check whether your specific brand and colour is covered; a certificate for "PLA Basic: CMYK colours" does not automatically cover every colour in the range.

Whichever route you choose, your complete Technical File should include: a general description of the toy, design drawings or photographs, a list of materials used (filament brand, type, colour, batch if possible), test results or certificates for EN 71-1, EN 71-2, and EN 71-3, a risk assessment, age grading rationale, the Declaration of Conformity, and labelling samples.

Age grading for 3D printed items

This is a critical distinction. Toys for children under 3 face significantly stricter requirements: no small parts at all (including parts that break off during testing), more restrictive chemical thresholds under EN 71-3, and more stringent mechanical testing.

Due to the nature of FDM-printed materials (layer lines, potential for breakage into small parts, material hardness), most 3D printed toys are more appropriately graded for children aged 3 and over.

However, makers must think carefully about the actual appeal of their product. A simple, brightly coloured stacking toy or a large smooth object may appeal to toddlers even if the maker intended it for older children.

Items graded for 3+ must carry the warning "Not suitable for children under 36 months" (or "Not suitable for children under 3 years") along with the specific hazard, typically "small parts" for 3D printed items. This warning does not exempt the maker from testing; it changes which test thresholds apply.

The Temu and import reselling problem

A growing number of craft fair stallholders supplement their handmade stock with items purchased cheaply from overseas marketplaces: Temu, AliExpress, Wish, Shein. Some sell them alongside their own creations; others build entire stalls around resold imported items.

The legal position is clear: if you buy items from an overseas marketplace and resell them in the UK, you are treated as the importer under UK product safety law. You take on all the legal responsibilities of a manufacturer: ensuring compliance, holding a Technical File, carrying UKCA marking, and being the named UK entity on the product.

The enforcement reality is equally clear. Rhondda Cynon Taf Trading Standards seized over 100 counterfeit and unsafe toys from a local business in early 2025 that had purchased them from Temu. A Toy Industries of Europe study found that 80% of toys bought from third-party traders on online marketplaces failed EU safety standards.

What this means practically:

• Items from these platforms are unlikely to carry valid UKCA marking or have compliant documentation
• You cannot rely on the overseas seller's claims of compliance; you must verify it yourself
• "It came with a CE mark" is not a defence; counterfeit CE/UKCA marks are common on imported products
• If Trading Standards visit a craft fair and find non-compliant imported items on your stall, you are liable, not the overseas seller

Intellectual property and copyright

A significant proportion of 3D printed items sold at craft fairs are based on copyrighted characters, trademarked brands, or designs created by third parties. Articulated dragons from Thingiverse, Pokémon figures, Disney characters, anime figurines: many sellers do not realise this is illegal.

**Copyright:** A 3D printed reproduction of a copyrighted character is infringement whether you made the CAD file yourself or downloaded it. If the character design belongs to someone else, reproducing it for commercial sale without a licence is infringement.

**Trademarks:** Using trademarked names (Pokémon, Disney, Marvel, Star Wars) on products, packaging, or in marketing materials is trademark infringement, even with "inspired by" added.

**Design files:** Many sellers use files from Thingiverse, MyMiniFactory, Printables, or Cults3D. These come with licences; many are for personal use only. Selling prints from personal-use files is a breach of the licence terms.

**Enforcement is real:** Lincolnshire Trading Standards specifically noted that trademarked characters should not be reproduced without authority. Seized items included 3D printed Sonic the Hedgehog figures. IP holders, particularly Disney, Nintendo, and Games Workshop, actively pursue enforcement against small sellers.

The safe position: if you designed the item yourself from scratch, you own the rights. If it depicts a recognisable character owned by someone else, you need a licence to sell it. For more detail, see our guide on copyright and intellectual property for craft sellers.

What event hosts need to know

Hosts are not directly liable for the product safety compliance of individual stallholders' items; the legal responsibility sits with the manufacturer or importer. However, hosts have a strong practical interest in compliance:

• A Trading Standards visit that results in seizures damages the event's reputation and the host's credibility
• Hosts who knowingly allow the sale of non-compliant or counterfeit products could face scrutiny
• Insurance policies may have exclusions relating to non-compliant products at events

Practical steps for hosts:

• Include a clause in stall booking terms requiring stallholders to confirm that all products comply with applicable safety regulations
• Recognise that 3D printed items are a high-risk category: most will be toys under the legal definition and require testing, UKCA marking, and proper labelling
• If a stallholder is selling obviously branded character items without evidence of a licence, treat this as a red flag for both IP infringement and product safety non-compliance
• Consider asking stallholders who sell 3D printed items to provide their Declaration of Conformity as part of the booking process

Items that may not be toys

Not everything 3D printed is automatically a toy. Items that are genuinely decorative, purely functional (a plain phone stand with no character design, a cable organiser, a shelf bracket), or intended solely for adults may fall outside the Toy Safety Regulations.

However, the General Product Safety Regulations 2005 still apply. Any product placed on the market must not present unacceptable risks to consumers.

A maker can label an item as "not a toy" to help establish intent, but this declaration must be credible. An articulated dragon in bright colours sold alongside fidget toys will not be accepted as a "decorative item" by Trading Standards simply because of a label. The test is whether a reasonable person would expect a child to play with it.

What would Trading Standards ask to see?

The same enforcement framework applies to 3D printed toys as to any other toy. Lincolnshire County Council Trading Standards issued a specific public warning about 3D printed products in September 2025, citing increasing numbers of non-compliant items at fairs and markets.

If your 3D printed items have play value (and most do), an officer can ask for everything listed in the UKCA toys guide, plus:

• **Filament traceability records.** Which specific filament brand, type, and colour was used for which products. This matters because EN 71-3 chemical migration results are colour-specific; a passing result for white PLA does not cover black PLA from the same manufacturer.
• **EN 71-3 certificates matched to your actual filament.** Whether from a UKAS-accredited lab, a consortium like 3D CertHub, or the filament manufacturer directly, the certificate must cover the exact brand, type, and colour range you print with.
• **Intellectual property evidence**, if you are selling items depicting recognisable characters or using third-party design files. Trading Standards enforcement of IP at craft fairs is real; the Lincolnshire case specifically cited 3D printed character figures as seized items.

**Your StallSync Event Passport can store your Declaration of Conformity, EN 71-3 consortium certificates, and filament traceability records in one place.**

The regulatory direction

The Office for Product Safety and Standards (OPSS) has identified 3D printing as a priority area. Lincolnshire County Council Trading Standards issued a specific public warning about 3D printed products in September 2025, citing increasing numbers of non-compliant items.

The Product Regulation and Metrology Act 2025 provides the framework for secondary legislation to reform UK product safety rules. OPSS published consultations in March 2026 proposing sweeping reforms, including expanded scope, new online marketplace duties, digital labelling flexibility, and civil monetary penalties.

The regulatory direction is towards stricter enforcement, not lighter. Sellers who get compliant now are ahead of the curve. Sellers who assume they can fly under the radar are taking an increasing risk.