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Folding Knife 3D Models: STL Files for 3D Printing

This collection gathers folding knife 3D models in several directions: pocket and everyday-carry shapes, utility knives for replaceable blades, multi-part assembly kits, blunted props and slim card designs. It is useful when you want a folding mechanism to print on a 3D printer and compare how different authors solve the pivot, the handle and the blade. The STL files come from several platforms, so the same idea often appears in more than one variant. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.

Le texte de cette collection est rédigé en anglais ; la recherche, elle, fonctionne dans toutes les langues.

Une collection Polyzon · 48 modèles sur 5 plateformes

Comment cette collection est composée

Polyzon compose cette collection à partir des résultats de recherche des plateformes connectées. Les doublons et les modèles sans aperçu sont retirés, les correspondances faibles sont placées à la fin, et le reste suit l’ordre de la recherche. Les modèles appartiennent à leurs auteurs : consultez les conditions sur la page de chaque modèle.

Règles de sélection : la rédaction de Polyzon · Texte mis à jour le 11/10/2026

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«Folding Knife 3D Models: STL Files for 3D Printing»

The models differ mostly in how the blade is made and how the knife is put together. Some are single-piece prints where the blade folds on a printed hinge, others are kits with separate blade, handle scales, pins and a lock or button. Utility designs are built around a standard replaceable blade, while blunted and prop versions keep the folding action but drop the cutting edge. Card knives and small novelty pieces trade strength for a thin profile that fits flat in a pocket.

Before printing, read the author's page for the details that decide the result: overall length and scale, the number of parts, whether supports are needed, and the material and settings the author lists. Check how the pivot is meant to be assembled, since a printed hinge usually needs clearance and sometimes a screw, pin or piece of filament. Look at photos of real prints to judge wall thickness on the handle and how the blade sits when folded.

If the results are thin, try related wording: pocket knife, EDC knife, utility knife, trainer, prop, butterfly or balisong, and card knife. Adding terms like assembly kit, locking, sheath, stand or remix narrows the list toward a specific mechanism or accessory. Browsing neighbouring topics such as multi-tool prints, key organisers or wallet inserts also turns up folding designs filed under other names.

FAQ

Questions fréquentes

What is the difference between a folding knife model and a fixed-blade one?
A folding model has a pivot, so the blade and handle are separate parts that move relative to each other. Fixed-blade prints are usually one solid piece and need no hinge clearance.
Do these models need supports?
It depends on the orientation the author chose. Flat-printed handles often need none, while blades with a spine or a hollow grind may need supports along the edge or the tip.
Which filament works for a folding mechanism?
Rigid filaments hold tolerances better around the pivot, while softer ones tend to deform and bind. The author's page usually states the material and settings used for the shown print.
Can I scale a folding knife model up or down?
Scaling changes the pivot clearance and the fit of pins or screws, so small changes are easier to handle than large ones. Reprinting a test piece first shows whether the hinge still moves.
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