工具与设备

Blade Knife STL Models for 3D Printing

This collection gathers 3D printing projects where a knife blade is the central part: utility cutters, folding knives, throwing knives and small holders. Most of them are designed around a standard replaceable blade, so the printed piece is the body, handle or sheath. It is a useful starting point if you want a custom grip or a compact cutter rather than a finished tool. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.

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筛选规则：Polyzon编辑部 · 文字更新于2026年10月10日

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«Blade Knife STL Models for 3D Printing»

The models differ mainly in how the blade is held and how the body moves. Utility cutters usually use a sliding or folding carrier for a segmented or standard blade, while balisong-style builds rely on pivots and printed handles. Throwing knives are single-piece shapes without a blade insert, and fixed-blade designs come with a separate sheath or printed scales that fit over a metal blank.

When choosing a model, look at the blade type and how it is retained, the number of parts and how they assemble, and whether the author shows supports or a particular print orientation. The model page usually lists the material and settings the author used, plus photos of real prints, which help you judge wall thickness around the blade channel and the size of the handle. Check the stated dimensions before printing, since a holder only works with the blade it was drawn around.

To widen the search, try other names for the same object: box cutter, craft knife, hobby knife, scalpel handle, EDC knife or blade holder. Related terms such as sheath, handle scales, keychain tool or fidget knife often lead to models that share the same mechanism. Combining a blade word with a mechanism word, for example folding or retractable, narrows the results further.

FAQ

常见问题

Does a 3D printed knife use a real metal blade?
Many of these models are built around a standard replaceable blade, and only the body, handle or holder is printed. Others are printed as one piece without any insert. The model page states which blade shape the design expects.
Which filament works for a knife handle?
It depends on how the part is loaded. Stiff filaments such as PLA or PETG are common for handles and holders, while parts that flex or take impacts are often printed in tougher blends. The author's listed settings are the reference point.
Do these models need supports?
Some print flat without them, others need supports around pivots, blade channels or overhangs. The orientation shown on the model page usually answers this, and rotating the part can sometimes remove the need.
How do I make a holder fit my blade?
Measure the blade you have and compare it with the dimensions given on the model page. If the fit is close, scaling the model slightly can help, but check that the pivot and screw holes still line up.
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