How to Cut a 3D Model with MeshLab: Fast-Track Guide to Editing 3D Models Effortlessly

Cutting a 3D model using MeshLab is a practical skill for anyone working with digital fabrication, 3D printing, or general mesh editing. MeshLab is a free, open-source software that offers a range of mesh editing tools, including slicing, trimming, and selection-based cutting. If you want to split your model, remove a specific section, or reshape your mesh, MeshLab makes it possible with its “Selection” and “Delete” features. Begin by importing your model (File > Import Mesh), then use tools under the "Selection" menu (like “Select Faces in a Rectangular Region” or “Select Vertices”) to define the part you want to keep or cut. Once your selection is highlighted, go to “Edit” > “Delete Selected Faces” to remove the unwanted elements. For more precise cuts, use filters such as “Cut with a Plane,” where you define a plane to split the mesh. After editing, you can export the cleaned model as a new STL or OBJ file.

Tips 1:

As a designer, I recommend having a clear vision of your desired outcome before cutting. It helps to work with duplicated layers of your original mesh in case you need to reverse or refine the cut. Also, if you plan to further enhance the interior aspects or layout of your model, utilizing specialized tools like a 3D Floor Planner can offer greater precision and flexibility throughout your design workflow. This approach ensures structural integrity and opens up more creative options when editing complex models.

FAQ

Q: Can MeshLab split a 3D model into two separate files?

A: Yes, after selecting and deleting specific parts, you can save the visible section as a new file, effectively splitting your model.

Q: Is MeshLab suitable for beginners?

A: While MeshLab has a learning curve, its core selection and cutting tools are intuitive for users familiar with 3D software basics.

Q: What file formats does MeshLab support for importing and exporting?

A: MeshLab supports formats like STL, OBJ, PLY, and more, making it compatible with most 3D workflows.

Q: Can I undo a cut in MeshLab?

A: Yes, you can use the Undo feature (Ctrl+Z or “Edit > Undo”) if you make a mistake before saving or closing your project.

Q: How precise are the cutting tools in MeshLab?

A: MeshLab provides both manual selection and plane-based cuts, offering control for basic and moderately complex slicing tasks.