Tool to measure, transform, repair, and slice STL files online for free for 3D printing

I was looking for a free tool to do some measurements on my STL files before sending it for 3D printing. After installing a few desktop applications, none of them actually fulfilled my needs, until I found this free online open-source tool from 0x00019913 I’m a Teapot, Meshy

meshy is a browser-based tool for performing measurements, transformations, visualizations, repair, and slicing on polygonal meshes, intended to make life easier for 3D printing.

Requirements:

• A computer with a GPU and a WebGL-capable browser with JavaScript enabled (tested in Chrome and Firefox on Ubuntu and Windows).
• Some features may not work with Opera, especially when using mouse gestures.

General Use:

• Meshy allows users to upload and manipulate 3D meshes.
• Only one mesh can be loaded at a time, though it can consist of multiple parts from a single file.
• Users can perform standard transformations (translations, rotations, scaling, etc.), measurements, repairs, slicing, and export operations.
• The tool also provides various viewport settings.

Interface and Controls:

• Meshy’s main viewport is controlled using mouse and keyboard commands, including rotation, zoom, and panning.
• Keyboard shortcuts are available for common actions like importing, centering, toggling the gizmo, and more.
• Information about computed quantities is displayed in the top-left corner.
• The dat.GUI box on the top right contains user-interactive components.
• An axis widget shows camera orientation, and a printout area provides status updates and warnings.

Gizmo:

• The gizmo is used for mesh transformations and is anchored to the mesh’s position.
• It can scale, rotate, and translate the mesh.
• Different handles indicate axis-oriented transformations and transformations in the viewing plane.
• Scaling occurs in object space, and the rotation handles work on world axes.

Import:

• Meshy supports OBJ and STL file formats (both binary and ASCII).
• There’s an approximate file size limit of 50-80MB for uploads.
• Import settings allow users to specify the units and auto-center the mesh on the build plate.

Export:

• Users can export the mesh as either OBJ or STL and specify the export units.
• Additional settings like endianness and vertex precision can be adjusted.

Settings:

• Various display settings are available, including precision, toggles for gizmo visibility, axis widgets, wireframe, center of mass indicator, and background color.
• Material options such as mesh color, roughness, and metalness can be configured.
• Build volume settings include toggling volume visibility, centering the origin, and defining dimensions.

Edit:

• Users can modify the mesh in various ways, including mirroring, translating, rotating, scaling, and more.
• Repair options patch holes in the mesh.

Measurement:

• Measurement tools allow for length, angle, circle, cross-section, and mesh thickness (Wall thickness) measurements.

Supports & Slicing:

• Users can generate tree supports and perform slicing for 3D printing.
• Support settings include angle, spacing factor, radius, taper factor, and more.
• Slicing options allow users to customize layer height, infill, raft settings, and generate G-code.

Slice Mode:

• Slice mode allows users to preview or fully visualize sliced layers of the mesh.
• Options to control layer settings, raft, and G-code are available in this mode.
• Slice mode can be turned on and off as needed.

Undo and Redo:

• Undo and redo are available for actions performed under the Edit folder and through the gizmo.

Delete:

• Deleting the mesh is a non-undoable action that clears the current state, allowing users to import a new mesh.

Meshy offers a comprehensive set of features for 3D mesh manipulation, making it a versatile tool for 3D modeling and printing tasks.