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Radiation Warning Signs: 3D Models and STL Files

This collection gathers 3D models built around the radiation warning symbol: wall signs, desk plates, keychains, patches and magnets. Most files are simple flat or relief shapes, which makes them a common first project for someone learning an STL workflow. The variety is wide enough to cover both strict hazard marking and playful desk decoration. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.

Il testo di questa raccolta è in inglese; la ricerca funziona in qualsiasi lingua.

Come è composta questa raccolta

Polyzon compone questa raccolta a partire dai risultati di ricerca dei siti collegati. I doppioni e i modelli senza anteprima vengono rimossi, le corrispondenze deboli finiscono in fondo e il resto mantiene l’ordine dei risultati. I modelli appartengono ai rispettivi autori: verifica le condizioni sulla pagina di ciascun modello.

Criteri di selezione a cura della redazione di Polyzon · Testo aggiornato: 14/10/2026


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«Radiation Warning Signs: 3D Models and STL Files»

The models fall into a few groups. Full-size wall or door signs reproduce the trefoil symbol, sometimes with added text such as caution or laser radiation. Small items — keychains, pins, magnets and fabric patches — shrink the same symbol to pocket scale. A separate group plays with the idea, turning it into joke office signs or multi-piece desk sets. There are also variants for non-ionizing and laser radiation, which use a different symbol layout than the classic trefoil.

Before printing, open the author's page and read what is listed there. Check the finished size and scale, since a keychain and a door sign need very different dimensions. Look at the number of parts and whether assembly or glue is involved, whether the model needs supports, and which material and settings the author names. Photos of real prints are the most useful reference for how the relief and thin details come out.

If you want more results, try related wording: hazard symbol, trefoil, radioactive warning, biohazard, laser warning, ISO 7010 sign, or desk sign. Combining the symbol with a use case — keychain, patch, magnet, door plate, office decor — narrows the list quickly. Searching for the symbol name in another language can also surface files that English queries miss.

For flat signs, layer height and top surface quality matter more than strength, while small keychains benefit from a slightly thicker body so the ring hole holds. Multi-colour versions usually mean separate parts or a filament change at a set height, so check how the author split the model. If text is part of the sign, confirm that it is modelled as geometry rather than painted on.

FAQ

Domande frequenti

What is the radiation warning symbol called?
It is usually called the trefoil or the radioactive hazard symbol. Models may label it as radiation sign, radioactive warning or hazard symbol, so try several terms.
Can these models be scaled up or down?
Flat signs scale fairly well, but thin rings, pins and small text can become too fine when reduced. Check the author's stated dimensions before changing the scale.
Do these prints need supports?
Many are flat plates that print without supports, while relief symbols, keychain rings and multi-part sets may need them. The model page usually states what the author used.
Which material works for a desk or door sign?
PLA is common for indoor plates, and PETG is often chosen where more flexibility is wanted. Follow the material and settings the author lists on the model page.

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