Preparing the next layer…
Preparing the next layer…

Made for thoughtful projects
This mold box is designed as a 3-piece modular system for silicone mold making. The STL file includes all three parts together:
Left wall - Right wall - Base plate
The parts are designed to fit together securely and can be separated easily after the silicone has cured.
Default Dimensions:
Inner Width: 50 mm
Inner Depth: 100mm
Wall Height: 50 mm
Wall Thickness: 3 mm
Base Thickness: 3 mm
Outer Flange Width: 10 mm
Panel Opening: 0 mm
Clamp Grip Allowance: 4 mm
The Rectangle Mold Box STL is a downloadable 3D model for makers who need a rectangular form for mold-making work. Its straightforward box shape gives the design a clear, practical purpose: it can be prepared in a slicer, printed as a physical mold box, and used as part of a mold-building workflow. The file is suited to studios and workspaces that organize projects around simple geometric forms. Because the listing centers on a rectangle mold box, it offers a focused tool rather than a decorative model or finished household object.
The defining feature of this design is its rectangular mold box form. Straight sides and a regular geometric outline create a visually simple structure that is easy to identify and position within a project. The rectangle theme also makes the model relevant for work where a clean, consistent boundary is preferred over an irregular silhouette. No decorative motifs are indicated, so the design keeps attention on the box shape and its role in mold preparation. Its form can fit naturally into organized studio workflows built around repeatable shapes and clearly defined working areas.
Use this rectangle mold box for projects that call for a rectangular mold-making form. It can be part of a studio setup for shaping, organizing, or preparing mold-related work around a simple geometric outline. The design may also be useful when a maker wants a dedicated box form for an individual project rather than adapting an unrelated container. Its neutral shape suits practical craft sessions, sample-making, and other work where the mold box itself should remain visually straightforward. The Symbols & Shapes tag further places it within a clean geometric design language.
After downloading the STL, open it in the slicing software used for your 3D printer and review the model before preparing the print. The slicer converts the digital geometry into printer instructions, which can then be sent to the printer to create the physical rectangle mold box. Once printed, the box can be incorporated into the intended mold-making process according to the maker’s own materials and methods. Inspect the finished print before use and adapt the surrounding workflow to the requirements of the specific project.
The Rectangle Mold Box STL is intended for makers who value a clear rectangular form in mold-related studio work. Its focused geometry makes it easy to recognize, prepare, and include in a project centered on a box-shaped mold boundary. The design is a practical choice for pottery, craft, and independent making workflows that call for a dedicated rectangle mold box. This listing provides a digital STL file for download and printing; it is not a physical product, and no shipped item is included.
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Personal covers private projects and gifts. Commercial allows up to 500 physical product sales; the STL files and all derivative digital files always remain protected.