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Casting Molds: 3D Models and STL Files for 3D Printing

This collection gathers STL files for casting molds, from simple two-part forms to parametric generators. You will find options for metal weights, candles, planters, plaster and cement, and small decorative parts. The pages are useful when you need a reusable shape for 3D printing rather than a finished object. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.

Esta colección está escrita en inglés, pero la búsqueda funciona en cualquier idioma.

Cómo se elabora esta colección

Polyzon reúne esta colección a partir de los resultados de búsqueda de las plataformas conectadas. Se eliminan los duplicados y los modelos sin vista previa, las coincidencias débiles van al final y el resto mantiene el orden de la búsqueda. Los modelos pertenecen a sus autores: consulta las condiciones en la página de cada modelo.

Criterios de selección: el equipo editorial de Polyzon · Texto actualizado el 10/10/2026


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«Casting Molds: 3D Models and STL Files for 3D Printing»

Molds in this collection range from single-piece open forms for shallow shapes to multi-part boxes with alignment features. Some are built around a specific object such as a weight, candle or planter, while others are adjustable or generated by a script. The choice depends on the shape you want to reproduce, the material you pour, and whether the mold needs to come apart without damaging the cast.

On the author's model page, check the stated size and scale, the number of parts, and whether the model needs supports during printing. Look at the wall thickness, draft angles and how the halves register, because these details affect how easily the mold releases the cast. The material and settings the author lists, along with photos of real prints, help you judge how the model behaves on your 3D printer.

To narrow the results, combine the main term with the material or object you have in mind, such as metal, plaster, cement, wax or soap. Related queries include two-part mold, open mold, box mold, parametric mold and mold generator. You can also search by the shape family, for example candle, planter, weight, ingot or sculpture, to find a closer starting point.

FAQ

Preguntas frecuentes

What is a casting mold in 3D printing?
It is a negative form printed from an STL file; you fill it with a material such as plaster, cement, wax or metal to create a positive copy. The mold may be a single piece or several parts held together.
How do you choose between a one-part and a two-part mold?
A one-part open mold works for shallow or flat-backed shapes. A two-part or multi-part mold is used when the object has undercuts or needs a closed cavity, but it requires more attention to alignment and parting lines.
What should you check before printing a mold?
Check the model's dimensions, wall thickness, number of parts and any notes about supports or orientation. Also review the material and settings the author lists and look at photos of printed molds.
Can a mold be used for different materials?
The geometry may work with several pourable materials, but each material has its own behavior, shrinkage and release needs. Check the author's notes and test with a small amount before a larger cast.

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